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Measurement and Instrumentation

Measurement and Instrumentation
Question:-
Option (A)
1 and 2
Option (B)
1 and 3
Option (C)
3 and 4
Option (D)
1 and 4
Correct Option:
C
Question Solution:
Both spectrum analyzer and distortion factor meter are signal analyzers. A spectrum analyzer sweeps the signal frequency band and displays a plot of amplitude versus frequency. Distortion factor meter tunes out the fundamental signal and gives an indication of the harmonics
Question:-
Option (A)
Provided by spring control
Option (B)
Provided by gravity control
Option (C)
Provided by stiffness of suspension
Option (D)
Not required
Correct Option:
D
Question Solution:
There will be two deflecting torques, one acting on coil A and the other on coil B. the coil winding are so arranged that the torques due to the two coils are opposite in direction. So there is no controlling torque
Question:-
Option (A)
McLeod gauge
Option (B)
Pirani gauge
Option (C)
Bridgman gauge
Option (D)
Knudsen gauge
Correct Option:
A
Question:-
Option (A)
1 kHz and 12
Option (B)
1 kHz and 14
Option (C)
2 kHz and 12
Option (D)
2 kHz and 14
Correct Option:
D
Question Solution:
Minimum sampling frequency = Nyquist sampling rate = 2kHz and resolution
= 0.01 = (1/(2n-1))x 100 Þ n » 14
Question:-
Option (A)
1.414 time dc sensitivity
Option (B)
dc sensitivity
Option (C)
0.90 time d sensitivity
Option (D)
0.707 time dc sensitivity
Correct Option:
C
Question Solution:
For full-wave rectifier type of instruments Vavg = 0.9V where V = Vm/Ö2 .