Exercise: Measurements And Instrumentation

Questions for: Measurements And Instrumentation

Two meters X and Y require 40 mA and 50 mA for full scale deflection. Then
A:
X is more sensitive
B:
Y is more sensitive
C:
both are equally sensitive
D:
it is not possible to determine from given data
Answer: D
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The sensitivity of a voltmeter using 0-5 mA meter movement is
A:
50 Ω/V
B:
100 Ω/V
C:
200 Ω/V
D:
500 Ω/V
Answer: C

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When deflecting torque and braking torque in an energy meter are zero,
A:
the disc rotates at steady speed
B:
the disc is stationary
C:
the disc accelerates
D:
the disc retards
Answer: A
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Which instrument needs creep compensation?
A:
Dynamometer wattmeter
B:
Induction wattmeter
C:
Energy meter
D:
Both (b) and (c)
Answer: C
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In an Anderson bridge the unknown inductance is measured in terms of
A:
known inductance and resistance
B:
known inductance
C:
known capacitance and resistance
D:
known capacitance
Answer: C
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