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Measurement and Instrumentation
A megger is usually
Electro-static type instrument
Moving coil type instrument
Hot-wire type instrument
Moving iron type instrument
Electro-static type instrument
Moving coil type instrument
Hot-wire type instrument
Moving iron type instrument
Answer
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Related Question
Measurement and Instrumentation
In an Anderson bridge, the unknown inductance is measured in terms of
Known inductance and resistance
Known inductance
Known resistance
Known capacitance and resistance
Known inductance and resistance
Known inductance
Known resistance
Known capacitance and resistance
Answer
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Measurement and Instrumentation
Two voltmeters have the same range 0-400V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600V be applied across them, the readings are
360V and 240V
One of the meters out of the range and other 100V
300V each
400V and 200V
360V and 240V
One of the meters out of the range and other 100V
300V each
400V and 200V
Answer
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Measurement and Instrumentation
A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be
50 W.
25 W.
100 W.
0 W.
50 W.
25 W.
100 W.
0 W.
Answer
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Measurement and Instrumentation
A mulliammeter can be used as
Voltmeter and ammeter
Wattmeter
Ohmmeter
Frequency meter
Voltmeter and ammeter
Wattmeter
Ohmmeter
Frequency meter
Answer
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Measurement and Instrumentation
When using ohmmeter, applied voltage is to be disconnected from the circuit because
None of these
Current will decrease resistance
Voltage source will increase resistance
The ohmmeter has its own internal battery
None of these
Current will decrease resistance
Voltage source will increase resistance
The ohmmeter has its own internal battery
Answer
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