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Measurement and Instrumentation

Measurement and Instrumentation
Which one of the following meters has maximum loading effect on the circuit under measurement ?

 100 Ω/volt
 1 MΩ/volt
 10 MΩ/volt
 1000 Ω/volt

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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. This is to have full deflection when 100V is measured. What is the value of series resistor to be used?

100 ohms
99.99 ohms
99.99 K ohms
100 K ohms

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Measurement and Instrumentation
In induction type ammeter, _____ damping is provided.

Air friction
Fluid friction
Eaddy current
None of the listed here

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Measurement and Instrumentation
Which of the quantity consists of unit as kg m/sec ?

 Impulse
 Acceleration
 Momentum
 Speed

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

 3750 rev/KWh.
 3600 rev/KWh.
 1000 rev/KWh.
 960 rev/KWh.

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Measurement and Instrumentation
The chemical effect of current is used in

C. ammeter hour meter
C. energy meter
None of these
C. ammeter

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