Exercise: Measurements And Instrumentation

Questions for: Measurements And Instrumentation

Capacitive transducer is superior to inductive type for measurement of capacitance because of
A:
absence of non-linearity
B:
high frequency response
C:
small size
D:
high accuracy
Answer: B
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Loading effect is primarily caused by instruments having
A:
high resistance
B:
high sensitivity
C:
low sensitivity
D:
high range
Answer: C
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The operating voltage of a megger is about
A:
100 V
B:
12 V
C:
6 V
D:
1 V
Answer: A
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If C is spring constant and Īø is deflection, controlling torque is
A:
CĪø
B:
C/Īø
C:
Īø/C
D:
C2Īø
Answer: A
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If Ļ†sh is flux of shunt magnet, Ļ†se is flux of series magnet, ish is eddy current due to Ļ†se, the torque in an induction wattmeter is proportional to
A:
Ļ†se ise + Ļ†sh ish
B:
Ļ†sh ise - Ļ†se ish
C:
Ļ†sh ish - Ļ†se ise
D:
Ļ†sh ish + Ļ†se ise
Answer: B
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