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Measurement and Instrumentation
A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads
(2 + √3/2)V.
5 V.
0 V.
2 V.
(2 + √3/2)V.
5 V.
0 V.
2 V.
Answer
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Related Question
Measurement and Instrumentation
The high torque to weight ratio in an analog indicating instrument indicates
high friction loss.
none of these.
low friction loss.
nothing related to friction loss.
high friction loss.
none of these.
low friction loss.
nothing related to friction loss.
Answer
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Measurement and Instrumentation
The inductance of a certain moving iron ammeter is expressed as L = 2+5θ-θ2 µH. The control spring torque is 2 × 10-6 Nm/radian. Find the deflection in radians for a current of 2A.
2
4
1
5
2
4
1
5
Answer
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Measurement and Instrumentation
Which of the following devices may be used for extending the range of instruments?
Current transformers
Shunt
All of the listed here
Potential transformers
Current transformers
Shunt
All of the listed here
Potential transformers
Answer
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Measurement and Instrumentation
To increase Q factor of a coil, the wire should be
long and thin.
long.
thick.
thin.
long and thin.
long.
thick.
thin.
Answer
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Measurement and Instrumentation
Unit of deflection sensitivity of a CRO is
meter / volt.
mm / V.
mm per mV.
V / mm.
meter / volt.
mm / V.
mm per mV.
V / mm.
Answer
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