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Measurement and Instrumentation

Measurement and Instrumentation
The multiplier and the meter coil in a voltmeter are in

Series
Parallel
None of the listed here
Series-parallel

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Measurement and Instrumentation
Electrostatic instruments are used as

Ammeters only
Both ammeter and voltmeter
Wattmeter only
Voltmeters only

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Measurement and Instrumentation
For measurement of mutual inductance we can use

Any of the listed here
Maxwell's bridge
Anderson bridge
Heavyside bridge

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Measurement and Instrumentation
How many fundamental units are there ?

 7
 6
 8
 4

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Measurement and Instrumentation
It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?

50W
200W
150W
100W

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Measurement and Instrumentation
When testing a coil having a resistance of 10 ohms, resonance occurred when the oscillator frequency was 10 MHz and rotating capacitor was set at 500/2π pF. The effective value of the Q of the coil is

 54.2.
 20.
 31.4.
 25.4.

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