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P

Pavan 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is scalar and vector quantity?

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Prathyusha replied | 28 Sep

any quantity that has only magnitude to define it completely is caled scalar quantity, Eg: weight
any quantity that requires magnitude and direction to define it completely is called vector quantity Eg: displacement(20m north)

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Ramalingam replied | 11 Oct

scalar has only magnitude. vector has both magnitude and direction.

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S

Saravanan 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the use of spectrometer?

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Guduri Ganesh Sai replied | 29 Sep

used to identify the frequencies in the given signal

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Vishal 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

Define Spectrometer?

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R

Rashmi replied | 30 Sep

an apparatus used for recording and measuring spectra, especially as a method of analysis.

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S

Sumit 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the use of ECG?

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Priyanka replied | 28 Sep

measuring instrunment for heart processing system

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J

Jaleeluddin 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What do you mean by ECG?

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Guduri Ganesh Sai replied | 29 Sep

electrocardiogram.it study the function of heart based on the signal its generates in the form of waves.

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Anupama Patil replied | 30 Sep

Electro caridio gram.Used to measure the heart related signals like heart beat,rythm and amplitude converted into electrical signals and shown as graph

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A

Aman 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

A loop transfer function is given by:G(s)H(s) = K(s + 2)/s power 2(s + 10). What is the point of intersection of the asymptote of G(s)H(s) on the real axis in the s-plane?

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Gangadhar replied | 29 Sep

(Sum of poles - sum of zeros)/(P-Z)
ie (-10-10-(-2))/(3-1)=-9
ie (-9,0)

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K

Kiran 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

Why semiconductor strain gauges typically have much higher gauge factors than those of metallic strain gauge?

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Pradeep Verma replied | 11 Oct

Gauge factor = (delta R/ R)/ Strain,
Basic principle of operation of operation of semiconductor strain gauge is the piezoresistive effect . This effect is the basic cause of high changes of resistance on strained. so its gauge factor is high.
Other hand in mettalic strain gauge, the cause of change of resistance when strained, is only change in shape of metal so its more...  more»
Gauge factor = (delta R/ R)/ Strain,
Basic principle of operation of operation of semiconductor strain gauge is the piezoresistive effect . This effect is the basic cause of high changes of resistance on strained. so its gauge factor is high.
Other hand in mettalic strain gauge, the cause of change of resistance when strained, is only change in shape of metal so its more low compare than semiconductor.
If you want to know more about piezoresistive effect or any confusion, tell me .
Thank You. «less

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Pradeep Verma replied | 12 Oct

Due to piezoresistive effect.

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N

Nitesh 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the real power in watts delivered to a load impedance ZL = (i,j2)? by an ideal current source i(t) = 4 sin(?l - 20)A ?

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Guduri Ganesh Sai replied | 29 Sep

v(rms)*i(rms) cos theta

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H

Hima 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the probability density function e power (x/2)/K if the value of the K is constant?

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Manish Pandey replied | 29 Sep

as pdf =f(x)= d/dx (F(x))
so here f(x)= d/dx (e power (x/2)/k )
= 1/2K exp(x/2k)

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D

Dhanshri 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What will be the x-y plot if the equation is: x(t) - 3 sin(1000 ?t) and y(t) - 5 cos(1000 ?t + ?/4) ?

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Chandan replied | 19 Oct

what is in the place of '?'

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A

Ankit 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

The population of a new city is 5 million and is growing at 20% annually. How many years would it take to double at this growth rate?

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Guduri Ganesh Sai replied | 29 Sep

approaximately 4 years i think, to get exact value use calci

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P

Praveen 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

In a given year, the probability of an earthquake greater than Magnitude 6 occurring in the Himalayas is 0.04. What is the average time period between successive occurrences of such earthquakes?

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Sabir replied | 13 Oct

25

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V

Vikas 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the value of | f(q) - f(-q)| if f(y) | y |/y , and q is a non -zero real number?

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Abir Bhattacharyya replied | 01 Oct

Plz check out the attachment

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N

Nasar 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the opposite of word of Frequency?
"

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Vidyapati Kumar replied | 28 Sep

infrequency,oddity,irregularity,uncommenness

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Priyanka replied | 28 Sep

time

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G

Golam 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the value of K for the phase margin of the system to be 45 degree?
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Sreekiran replied | 13 Oct

Can you Provide the systemTransfer function please?

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A

Ankit 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

The open loop transfer of a unity negative feedback control system is given by:G(s) = K/(s + 5) power 2. ?

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P

Prathyusha replied | 28 Sep

G is open loop transfer function only.

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A

Apoorva 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

"

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D

Divya 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

A chamber is heated with a heater of maximum power rating of 1000W. The process transfer relationship between the steady-state heater power and chamber temperature is assumed to be linear with a slope of 2Watts/?. The heater power is the sum of the output of a proportional controller having a proportional band of 200% and a constant offset of 500W....  more»
A chamber is heated with a heater of maximum power rating of 1000W. The process transfer relationship between the steady-state heater power and chamber temperature is assumed to be linear with a slope of 2Watts/?. The heater power is the sum of the output of a proportional controller having a proportional band of 200% and a constant offset of 500W. What is the temperature achieved for a set point of 300? ?
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Narmatha 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

The ECG of a patient is being recorded using the three standard frontal plane leads. If the cardiac vector is oriented at an angle 45 degrees to Lead ? and has magnitude of 3mV. What are the voltages seem on Leads ?, ?, ? ?
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K

Kamal 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

Light of intensity I0 is equally divided and passed through 2 cuvettes P1 and P2 constanting an analyte at concentration c and 0.5c respectively. The corresponding path lengths in P1 and P2 are 4 cm and 1 cm. The cross sectional areas are 1cm2 and 3cm2 respectively. What is the ratio of the absorbances in P1 and P2 ?
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D

Devi 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the value of R1 if V1 = 0.2V, V2 = 0.6V and the Op-amp is ideal?
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A

Ananya 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

Let V1=V2=Vc sin 2? f t and R1= 20 k??. The Op-amp has a slow rate of 0.5 V/?s with its other parameters being ideal. What are the values of Vc and f for which the amplifier output will have no distortion?
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Y

Yuvraj 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

Let V1=V2=0 and R1= 20 k?? . Assume that the Op-amp is ideal except for a non-zero input bias current. What is the value of R2 for the output voltage of the Op-amp to be zero?
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T

Tushar 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the angular frequency in radiation per second at which the loop phase lag becomes 180 degree?
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S

Sandeep 28 Sep in  GATE Coaching classes, Instrumentation(GATE Coaching classes)

What is the steady state error for a unit step input when the gain Kc = 1?
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