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# Ask an Instrumentation(GATE Coaching classes) Question

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Nasreen 28/09/2016 in  Instrumentation(GATE Coaching classes)

Define automation programme in related to instrumentation?

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Devinder 28/09/2016 in  Instrumentation(GATE Coaching classes)

In a time of flight mass spectrometer if a q is the charge and m is the mass of the ionized species, then the time of flight is proportional to what value?

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V

Vathsala 28/09/2016 in  Instrumentation(GATE Coaching classes)

A full duplex binary FSK transmission is made through a channel of bandwidth 10 kHz. In each direction of transmission the two carriers used for the two states are separated by 2 kHz. What is the maximum band rate for this transmission?
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Ann 28/09/2016 in  Instrumentation(GATE Coaching classes)

A 4-bit successive approximation type of A/D converter has an input range of 0 to 15 volts. The output bit b1 next to LSB has a stuck at zero fault. What are the pair of input voltages that produces the same output code word?

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S

Santosh 28/09/2016 in  Instrumentation(GATE Coaching classes)

Power in a 3 phase star connected balanced inductive load is measured by two wattmeter method. The phase voltage and phase current are 230V and 5A,respectively. The power factor of the load is 0.707. What are the readings of P1 and P2 of the two Wattmeters?

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B

Bhupen 28/09/2016 in  Instrumentation(GATE Coaching classes)

A turbine flow meter is rotating at 72rpm. The flux ? linked to nearby magnet and coil assembly is given by ?(?) = 3+cos (40)mWb where ? is the angular position (in radian). What are the amplitude and frequency of the voltage signal ?

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S

Shreyas 28/09/2016 in  Instrumentation(GATE Coaching classes)

In a flapper - nozzle displacement transducer, the values of the of the following parameters are given: Diameter of the orifice = 0.2mm,Diameter of the nozzle = 0.8mm, supply pressure = 1.4*102 kPa (gauge), Ambient pressure = 0 (gauge). What is the maximum value of the sensitivity?

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S

Srikanth 27/09/2016 in  Instrumentation(GATE Coaching classes)

Let j = ?-1. Then what is the value of j power of j?

Shruti replied | 28/09/2016

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Pradeep 27/09/2016 in  Instrumentation(GATE Coaching classes)

A logic circuit implements the boolean function F = X.Y+X.Y.Z . It is found that the input combination X = Y= 0 can never occur. What is the simplified expression for F according to above boolean expression?

Shruti replied | 28/09/2016

XY

Manish Pandey replied | 29/09/2016

F=X.Y + X.Y.Z
F= X.Y
from here
X Y | F
0 0 | 0
0 1 | 1
1 0 | 1
1 1 | 1

so from truth table F = X+Y (max term form)

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V

Vikas 27/09/2016 in  Instrumentation(GATE Coaching classes)

Let x(t) be a continuous-time, real-valued signal band limited to Hz. What is the Nyquist sampling rate, in Hz, for y(t)= x(0.5t) + x(t) - x(2t) ?

Guduri Ganesh Sai replied | 28/09/2016

sampling rate will be 4 hz.if the given signal has a frequency of 1hz

Anupama Patil replied | 30/09/2016

It is twice the highest frequency in the signal.So it is 2 * 2 = 4 Hz

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B

Bhawna 27/09/2016 in  Instrumentation(GATE Coaching classes)

Consider the periodic signal x(t) = (1+0.5 cos 40?t)cos 200?t, where t is in seconds. What is its fundamental frequency, in Hz?

Guduri Ganesh Sai replied | 28/09/2016

20

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M

Muskan 27/09/2016 in  Instrumentation(GATE Coaching classes)

Let A be an n*n real matrix such that A2 = I and y be an n- dimensional vector. What is the linear system of equation Ax = y?

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K

Krishnaraj 27/09/2016 in  Instrumentation(GATE Coaching classes)

In full sunlight, a solar cell has a short circuit of 75ma and a current of 70mA for a terminal voltage of 0.6v with a given load. What is the value of Thevenin resistance of the solar cell?

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B

Bivash 27/09/2016 in  Instrumentation(GATE Coaching classes)

What is the difference between Amplifier Characteristics and Sensing Application?

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Rama 27/09/2016 in  Instrumentation(GATE Coaching classes)

What is a Clark oxygen sensor?

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D

Durgesh 27/09/2016 in  Instrumentation(GATE Coaching classes)

A dynamometer type wattmeter with a single scale marked for the smallest power range, has two current ranges, namely,0.5A and 0.10A as well as two voltage ranges, namely 0.150V and 0.300v. To carry out a load test on a 230V/115V, 1kVA, single phase transformer, the wattmeter is used on the high voltage side. The voltage and current ranges are chosen...  more»
A dynamometer type wattmeter with a single scale marked for the smallest power range, has two current ranges, namely,0.5A and 0.10A as well as two voltage ranges, namely 0.150V and 0.300v. To carry out a load test on a 230V/115V, 1kVA, single phase transformer, the wattmeter is used on the high voltage side. The voltage and current ranges are chosen for maximum utilization of the scale. What is the multiplying factor to be used in this case? «less

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D

Dr. Rajani 27/09/2016 in  Instrumentation(GATE Coaching classes)

Consider the standard state space description of a linear time-invariant single input single output system: x=Ax+Bu, y=Cx+Du. Which is can not be true statement about this transfer function if D=0?

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A

Amit 27/09/2016 in  Instrumentation(GATE Coaching classes)

In N2-washout estimation of lung volume using spirometry, the lung volumes at the beginning and the end of the washout are the same. Let T,V and F denote temperature, volume and molar fraction (of N2) respectively;subscripts S and L denote the spirometer and the lung and t1 and t2 the beginning time and the end time of the experiment, respectively....  more»
In N2-washout estimation of lung volume using spirometry, the lung volumes at the beginning and the end of the washout are the same. Let T,V and F denote temperature, volume and molar fraction (of N2) respectively;subscripts S and L denote the spirometer and the lung and t1 and t2 the beginning time and the end time of the experiment, respectively. What is the equation of the volume of the above equation? «less

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C

Chiranjib 27/09/2016 in  Instrumentation(GATE Coaching classes)

What is the expression of X-ray diffractometer if the dispersion in an X-ray diffractometer,d??/d? ?

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K

Kumarnaik 27/09/2016 in  Instrumentation(GATE Coaching classes)

What are the roots of the polynomial:p(x) = x power 5 + x + 2 ?

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M

Manasa 27/09/2016 in  Instrumentation(GATE Coaching classes)

What is the rank of A if A = [ aij ],1 ? i,j ? n, with n ? 3 and [aij] = i,j ?

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A

Aarti 27/09/2016 in  Instrumentation(GATE Coaching classes)

What is the maximum value for real x, if sin x/(e power cosx) ?

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S

Shabana 27/09/2016 in  Instrumentation(GATE Coaching classes)

What is the function f(x) denotes if the function f(x) = | x |3 ,where x is real; f(x) at x = 0 ?

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Jainam 27/09/2016 in  Instrumentation(GATE Coaching classes)

What is the value of the integral ?0? ?0? e power -x power 2 e power -y power 2 dx dy ?

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S

Sonakshi 27/09/2016 in  Instrumentation(GATE Coaching classes)

What is the order of pole for the function sin x/x power 3 of a complex variable z, the point z = 0?

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