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Engineering Entrance Coaching

Engineering Entrance Coaching

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R

Rajeswari 16 Nov in  IIT JEE Coaching classes, IIT JEE Integrated Coaching(IIT JEE Coaching classes)

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Auxano Edutech Llp replied | 30 Nov

Minimum 2 years courses can be covered in 2 years or 1 year and not less than that. Please ensure where ever you are doing this course you must cover Board curriculum too. Student get confused between Board & IIT as Board is detailed answers and IIT is objective based, so it is required to have 2 years time to adapt the skills.

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Gautam replied | 5 days ago

Serious preparation needs to start from the beginning of Class XI. It will be very helpful if the elements of differential and integral calculus are learned in Class X itself- This will speed up the process.
Much of the initial period must be spent in thoroughly preparing the groundwork or fundamentals.
All this means a period of twenty months. The last four months of this...  more»
Serious preparation needs to start from the beginning of Class XI. It will be very helpful if the elements of differential and integral calculus are learned in Class X itself- This will speed up the process.
Much of the initial period must be spent in thoroughly preparing the groundwork or fundamentals.
All this means a period of twenty months. The last four months of this two-year period must be set apart for to prepare for the Class XII Board examination itself. «less

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C

Chandan 29 Nov in  IIT JEE Coaching classes, IIT JEE Mains Coaching(IIT JEE Coaching classes)

What is fee structure for crash course for JEE?

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Peeyush replied | 29 Nov

Well it largely depends upon where you want to pursue your crash course. One broadly has two options to go with for the crash course (Usual course duration 10-12 weeks, 6 hrs a day, 5 days a week one day test)
1. A coaching institute:- The fee at such coaching institute ranges from Rs. 8000/- to Rs. 30000/- depending upon your location and reputation of institute. And if you...  more»
Well it largely depends upon where you want to pursue your crash course. One broadly has two options to go with for the crash course (Usual course duration 10-12 weeks, 6 hrs a day, 5 days a week one day test)
1. A coaching institute:- The fee at such coaching institute ranges from Rs. 8000/- to Rs. 30000/- depending upon your location and reputation of institute. And if you are wondering how can they charge so less; well the batch strength usually starts from 20 students and can go much higher (in some cases beyond 60 as well) so that makes it profitable for them.
Pros- a well known name of the coaching to boost your confidence. Regular tests, and you can test yourself within a number of students.
Cons- pace of the course is usually too fast, lack of personalised attention (though every institute will claim it).
2. Personal Teacher:- Such teachers usually charges 600/- to Rs. 1500/- per hour, again depending upon the experience, subject expertise of teacher as well as the location. well this fee structure can make personal instructors too expensive for many parents costing them from 60k to 1.5L per subject.
Pros- Personalised attention even if you are attending in group of up to 5 students (tutors usually charges lesser for a group of students). Maximum impact just like if you get a personal trainer in gym.
Cons- Lack of quality content and ineffective knowledge transfer if you unluckily end up with incompetent tutors.
We can go on and on discussing these two options but this might just be enough. Hope it helps. Good luck. «less

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Gautam replied | 01 Dec

I do not believe that any crash course can yield much benefit.Preparation is an 18-24 months stint (start it from the beginning of Class XI latest)to give a student.
the foundation or "funda" he needs to give him the preparation and confidence to tackle anything that the examiner may throw at him.
Choose a tutor or coaching institute that offers quality and sincerity. Choose...  more»
I do not believe that any crash course can yield much benefit.Preparation is an 18-24 months stint (start it from the beginning of Class XI latest)to give a student.
the foundation or "funda" he needs to give him the preparation and confidence to tackle anything that the examiner may throw at him.
Choose a tutor or coaching institute that offers quality and sincerity. Choose a group of 6-8 fellow students whose participation will enable group study. Check on your expenditure of time as well as money. «less

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Uma 25 Nov in  GATE Coaching classes, Architecture and Planning(GATE Coaching classes)

Hi, I am an architecture student doing my fourth year now. I am confused as to what to do after architecture. I want some advice. If I do project management, how will that help?

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Hussam Uddin replied | 25 Nov

Do M.Arch and go for teaching as Assistant professor.

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Meenu Ranka replied | 25 Nov

Hi Uma,
I suggest you not to take up project management as it'll keep you away from designing.
Instead there are various options like landscaping, conservation, urban design which are related to architecture.
You can select anyone that you think you are interested in.
I hope I've been of help.
Good luck dear.

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Answer

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R

Rajesh 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the difference between the low - pass signal and band - pass signal?

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Reneeta replied | 27 Nov

A low pass signal is a signal which has lower frequency very close to zero or zero. The signal can have a maximum frequency (f) till which the frequency spectrum extends. A band pass signal consists of a frequency band in which the lower frequency is much higher than zero frequency.

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M replied | 28 Nov

Signal with low frequency that pass through low pass filter and signal with medium frequency that pass through band pass filter.

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Answer

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S

Sheekha 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the overall impulse response of the cascaded system if the two systems with impulse h1(t) and h2(t) are connected in cascade?

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Pratik replied | 01 Dec

H1(s) * H2(s)

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Sathyaprakash replied | 6 days ago

h1(t)*h2(t).

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Answer

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M

Mridulika 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What type of gas produced when the IC technology, dry oxidation as compared to wet oxidation?

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Vikas replied | 30 Nov

In dry oxidation no gas is produced.
In Wet Oxidation Hydrogen gas is produced.
Wet Oxidation:-
It is a form of hydro thermal reaction. The oxidation is done by involving the dissolved components in H2O with oxygen as a oxidizer.
The chemical reaction is:
Si + 2 H2O -> SiO2 + 2H2
Dry Oxidation:-
Dry oxidation has lower growth rate than wet oxidation,...  more»
In dry oxidation no gas is produced.
In Wet Oxidation Hydrogen gas is produced.
Wet Oxidation:-
It is a form of hydro thermal reaction. The oxidation is done by involving the dissolved components in H2O with oxygen as a oxidizer.
The chemical reaction is:
Si + 2 H2O -> SiO2 + 2H2
Dry Oxidation:-
Dry oxidation has lower growth rate than wet oxidation, although the oxide film quality is better.
The chemical reaction for Silicon and Oxygen is:-
Si + O2 -> SiO2. «less

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Answer

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V

Vikas 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the fundamental frequency in rad/s for a periodic signal v(t) = 30 sin 100t + 10 cos 300t + 6 sin(500t + pie / 4)?

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Sanjeev replied | 30 Nov

2pi/500

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Sathyaprakash replied | 6 days ago

100 rad/s.

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Answer

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R

Rayyan 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

A band limited signal with a maximum frequency of 5kHZ is to be sampled. Then what is the value of sampling frequency?

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Sathyaprakash replied | 6 days ago

More than 10 kHz.

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Answer

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A

Vikas replied | 5 days ago

The Laplace transform is an integral transform named after its discoverer Pierre-Simon Laplace.
It takes a function of a positive real variable t (often time) to a function of a complex variable s (frequency).
While the Fourier transform of a function is a complex function of a real variable (frequency), the Laplace transform of a function is a complex function of a complex...  more»
The Laplace transform is an integral transform named after its discoverer Pierre-Simon Laplace.
It takes a function of a positive real variable t (often time) to a function of a complex variable s (frequency).
While the Fourier transform of a function is a complex function of a real variable (frequency), the Laplace transform of a function is a complex function of a complex variable. Laplace transforms are usually restricted to functions of t with t > 0. A consequence of this restriction is that the Laplace transform of a function is a holomorphic function of the variable s. Unlike the Fourier transform, the Laplace transform of a distribution is generally a well-behaved function. Also techniques of complex variables can be used directly to study Laplace transforms. As a holomorphic function, the Laplace transform has a power series representation. This power series expresses a function as a linear superposition of moments of the function. This perspective has applications in probability theory. «less

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Vikas replied | 5 days ago

The Laplace transform is an integral transform named after its discoverer Pierre-Simon Laplace.
It takes a function of a positive real variable t (often time) to a function of a complex variable s (frequency).
While the Fourier transform of a function is a complex function of a real variable (frequency), the Laplace transform of a function is a complex function of a complex...  more»
The Laplace transform is an integral transform named after its discoverer Pierre-Simon Laplace.
It takes a function of a positive real variable t (often time) to a function of a complex variable s (frequency).
While the Fourier transform of a function is a complex function of a real variable (frequency), the Laplace transform of a function is a complex function of a complex variable. Laplace transforms are usually restricted to functions of t with t > 0. A consequence of this restriction is that the Laplace transform of a function is a holomorphic function of the variable s. Unlike the Fourier transform, the Laplace transform of a distribution is generally a well-behaved function. Also techniques of complex variables can be used directly to study Laplace transforms. As a holomorphic function, the Laplace transform has a power series representation. This power series expresses a function as a linear superposition of moments of the function. This perspective has applications in probability theory.
The Laplace transform is invertible on a large class of functions. The inverse Laplace transform takes a function of a complex variable s (often frequency) and yields a function of a real variable t (time). Given a simple mathematical or functional description of an input or output to a system, the Laplace transform provides an alternative functional description that often simplifies the process of analyzing the behavior of the system, or in synthesizing a new system based on a set of specifications. So, for example, Laplace transformation from the time domain to the frequency domain transforms differential equations into algebraic equations and convolution into multiplication.
The Laplace transform is particularly useful in solving linear ordinary differential equations such as those arising in the analysis of electronic circuits. «less

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Answer

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M

Manu 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

A car travels 8 km in the first quarter of an hour, 6 km in the second quarter and 16 km in the third quarter. What is the average speed of the car in km per hour over the entire journey?

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Vikas replied | 23 Nov

d1/t1 = 8 /0.25 = 32 Km /Hr (1st quarter speed).
d2/t2 = 6/0.25 = 24 Km/Hr (2nd quarter speed).
d3/t3 = 16/0.25 = 64 Km/Hr (3rd quarter speed).
Hence the average speed for all quarters = (32+24+64)/3 = 120 / 3 = 40 km/Hr.

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Sethu Bharath Yadav replied | 25 Nov

Speed = distance/time
= (8+6+16)/(1/4+1/4+1/4)
= (30)/(3/4)
= 40 kmph.

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Answer

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P

Priyanka 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the chance that a leap year, selected at random, will contain 53 Saturdays?

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Vikas replied | 5 days ago

A leap year has 366 days = 52 weeks ( 52x7 days) + 2 days = 364 + 2 = 366 Days
So, we are looking for either of these extra 2 days being Saturday.
We have 7 week days , we have 2 extra days in leap year over 52 weeks.
Thus probability that any day of the week is Saturday is 1/7
Here we have 2 Extra days ==> Total Probability = 1/7 + 1/7 = 2/7
Hence the chance...  more»
A leap year has 366 days = 52 weeks ( 52x7 days) + 2 days = 364 + 2 = 366 Days
So, we are looking for either of these extra 2 days being Saturday.
We have 7 week days , we have 2 extra days in leap year over 52 weeks.
Thus probability that any day of the week is Saturday is 1/7
Here we have 2 Extra days ==> Total Probability = 1/7 + 1/7 = 2/7
Hence the chance that a leap year selected at random will contain 53 Saturdays is 2/7. «less

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Answer

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R

Ritu 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

How many roots does the given polynomial have: f(x) = a4 (x power 4) + a3 (x power 3) + a2 (x power 2) + a1 (x) - an with all positive coefficients?

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Sanjeev replied | 30 Nov

4 since its degree is 4

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Answer

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B

Baiju 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

A person moving through a T.B prone zone has a 50% probability of becoming infected. However, only 30% of infected people develop the disease. What percentage of people moving through a T.B prone zone remains infected but does not show symptoms of disease?

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Vikas replied | 30 Nov

Two events : Getting Infected & Developing Disease:-
Non-Infected Persons percentages.
Person moving in TB prone zone.
50% of persons remains non-infected.

Infected Persons Percentages:-
TB prone zone = 50% Infected persons
Out of Infected Persons 30% develop the disease. (@ 0.5 x30% = 15% of persons moving through TB Zone
get infected & develop...  more»
Two events : Getting Infected & Developing Disease:-
Non-Infected Persons percentages.
Person moving in TB prone zone.
50% of persons remains non-infected.

Infected Persons Percentages:-
TB prone zone = 50% Infected persons
Out of Infected Persons 30% develop the disease. (@ 0.5 x30% = 15% of persons moving through TB Zone
get infected & develop disease).

==> Out if Infected Persons 70% do not develop the disease (@0.5 x 70% = 35% of persons moving through TB Zone get infected but does not develop disease)

So, the answer is 35% of people moving through a T.B. prone zone remains infected but does not show symptoms of disease. «less

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Answer

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S

Sangeeta 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

A continuous time function x(t) is periodic with period T. The function is sampled uniformly with a sampling Ts, in which one of the following cases is the sampled signal periodic?

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Shantanu replied | 29 Nov

T=1.2Ts

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Shantanu replied | 29 Nov

Consider x(t) = cos w(0) t
if x(t) s sampled with a sampling period Ts, x[n] =cos (ohm)(0) n is obtained.
(ohm)(0) n/Ts = w(0)
2*pi*m/NoTs = 2*pi/To
To/Tm=N0/m, must be a rational number
T/Ts=12/10=6/5 lives a periodic signal after sampling

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Answer

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S

Santosh 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the difference between AND gate and NAND gate?

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Brain Hub replied | 27 Nov

Digital logic only uses 2 voltage levels, at or near supply voltage(high logic state) & ground or zero(low logic state).
These states = "yes" or "no" or "on" or "off".
On a AND gate, if there's 1 low input , it has a low output.
This doesn't change until there's 2 high inputs, at which time the output is high.
AND gate
A + B = output
L+ L =L
L+H=...  more»
Digital logic only uses 2 voltage levels, at or near supply voltage(high logic state) & ground or zero(low logic state).
These states = "yes" or "no" or "on" or "off".
On a AND gate, if there's 1 low input , it has a low output.
This doesn't change until there's 2 high inputs, at which time the output is high.
AND gate
A + B = output
L+ L =L
L+H= L
H+L= L
H+H=H .......A NAND gate is the opposite.
NAND gate
A+B= output
L+L=H
L+H=H
H+L=H
H+H=L «less

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M replied | 28 Nov

AND gate is basic logic gate and NAND gate is universal gate. Negation of AND gate is NAND gate.

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Answer

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N

Nagasanthoshi 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is the integral value of the function: s(x) = 5 cos(160 t) + 20 cos(180 t) + 5 cos(200 t)?

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M replied | 28 Nov

(5 cos(160 t) + 20 cos(180 t) + 5 cos(200 t))*x+constant

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Answer

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S

Satish 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What do you mean by L,C,R circuit?

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Vikas replied | 01 Dec

An inductor (L), and a capacitor (C), a resistor (R), connected in series or in parallel make electrical circuit.
The name of the circuit is derived from the letters that are used to denote the constituent components of this circuit.

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Answer

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A

Shyama replied | 5 days ago

Impedence is an expression used to denote any opposition offered by an electrical component say a circuit, to an alternative current or direct current when a voltage is applied. The impedence is denoted by z. This resistance consists of two independent phenomena-resistance and reactance.

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Bibin replied | 4 days ago

It is essentially resistance.

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Answer

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S

Shaun 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What do you mean by discrete - time function?

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Pratik replied | 01 Dec

Discontinuous time. For example a doctor measure temperature of a patient after an interval of 5 hours. So doctor will have patient's temperature at interval of 5 hours. So temperature is a discrete time function.

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Answer

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A

Abinaya 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

What is signal to noise ratio?

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Fast replied | 6 days ago

Signal-to-noise ratio (abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined as the ratio of signal power to the noise power, often expressed in decibels.

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Shyama replied | 6 days ago

Signal to noise ratio is defined as the ratio of power of signal to the power of noise. The signal is the needed information and the noise is an unwanted signal.
This is a parameter used by Shannon to give a relationship between signal power and noise power.
SNR=Signal Power/ Noise Power.
SNR in decibels(db) gives how much the intended signal exceeds noise signal.
SNRdb=...  more»
Signal to noise ratio is defined as the ratio of power of signal to the power of noise. The signal is the needed information and the noise is an unwanted signal.
This is a parameter used by Shannon to give a relationship between signal power and noise power.
SNR=Signal Power/ Noise Power.
SNR in decibels(db) gives how much the intended signal exceeds noise signal.
SNRdb= 10log to the base 10 SNR «less

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N

Non 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

Complete the following sentence: Despite the new medicine’s ______________ in treating diabetes, it is not ______________widely.

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Vikas replied | 30 Nov

ability, available.
Despite the new medicine's ability in treating diabetes, it is not available widely.

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Sanjeev replied | 30 Nov

capability, accepted.

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Answer

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M

Moid 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

Match the inferences X, Y, and Z, about a system, to the corresponding properties of the elements of first column in Routh s Table of the system characteristic equation. X: The system is stable P: when all elements are positive Y: The system is unstable Q: when any one element is zero Z: The test breaks down R: when there is a change in...  more»
Match the inferences X, Y, and Z, about a system, to the corresponding properties of the elements of first column in Routh’s Table of the system characteristic equation.
X: The system is stable … P: … when all elements are positive
Y: The system is unstable … Q: … when any one element is zero
Z: The test breaks down … R: … when there is a change in sign of coefficients? «less

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Shantanu replied | 29 Nov

X->P
Y->R
Z->Q

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A

Aditya 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

Consider binary data transmission at a rate of 56 kbps using baseband binary pulse amplitude modulation (PAM) that is designed to have a raised-cosine spectrum. The transmission bandwidth (in kHz) required for a roll-off factor of 0.25 is ________?

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Shantanu replied | 29 Nov

35

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Answer

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S

Shagufta 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

A digital communication system uses a repetition code for channel encoding/decoding. During transmission, each bit is repeated three times (0 is transmitted as 000, and 1 is transmitted as 111). It is assumed that the source puts out symbols independently and with equal probability. The decoder operates as follows: In a block of three received bits,...  more»
A digital communication system uses a repetition code for channel encoding/decoding. During transmission, each bit is repeated three times (0 is transmitted as 000, and 1 is transmitted as 111). It is assumed that the source puts out symbols independently and with equal probability. The decoder operates as follows: In a block of three received bits, if the number of zeros exceeds the number of ones, the decoder decides in favor of a 0, and if the number of ones exceeds the number of zeros, the decoder decides in favor of a 1. Assuming a binary symmetric channel with crossover probability p = 0.1, the average probability of error is ________? «less

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Shantanu replied | 29 Nov

Cross over Probability P = 0.1
X = number of errors
P(error) = (0.5) P(x>=2 @000sent) + (1/2) P(x>=2 @111sent)
=2*(1/2)(((3/2)*(0.1)^2 * (0.9)^1))+((3/3)*(0.1)^3 * (0.9)^0)) = 0.028

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Answer

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D

Deepak 19 Nov in  GATE Coaching classes, Electronics & Communication(GATE Coaching classes)

Two losses X-band horn antennas are separated by a distance of 200?. The amplitude reflection coefficients at the terminals of the transmitting and receiving antennas are 0.15 and 0.18, respectively. The maximum directivities of the transmitting and receiving antennas (over the isotropic antenna) are 18 dB and 22 dB, respectively. Assuming that the...  more»
Two losses X-band horn antennas are separated by a distance of 200?. The amplitude reflection coefficients at the terminals of the transmitting and receiving antennas are 0.15 and 0.18, respectively. The maximum directivities of the transmitting and receiving antennas (over the isotropic antenna) are 18 dB and 22 dB, respectively. Assuming that the input power in the losses transmission line connected to the antenna is 2 W, and that the antennas are perfectly aligned and polarization matched, the power ( in mW) delivered to the load at the receiver is ________? «less

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Shantanu replied | 29 Nov

3

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Answer

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