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Measurement and Instrumentation

Measurement and Instrumentation
A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is

 25 V.
 200 V.
 100 V.
 50 V.

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Measurement and Instrumentation
If two 300V full scale voltmeters V1 and V2 having sensitivities of 100 kOhm/V and 150 kOhm/V are connected in series to measure 500V then

 V1 = 250V and V2 = 250V.
 V1 = 200V and V2 = 300V.
 V1 = 0V and V2 = 0V.
 V1 = 300V and V2 = 200V.

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Measurement and Instrumentation
The function of shunt in an ammeter is to

Increase the sensitivity of the ammeter
None of the listed here
By pass the current
Increase the resistance of ammeter

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Measurement and Instrumentation
The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. If this meter is to have full deflection at 5A, what is the value of the shunt resistance to be used?

1/49.99 ohms
49.99 Ohms
1 Ohm
2 Ohms

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Measurement and Instrumentation
No eddy current and hysteresis losses occur in

PMMC instruments
Electrodynamo meter instruments
Electrostatic instruments
Moving iron instruments

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Measurement and Instrumentation
When checked with an ohm meter an open resistor reads

  high but within tolerance.
  low but not zero.
  zero.
  infinite.

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