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Measurement and Instrumentation

Measurement and Instrumentation
In which of the transformer is the secondary nearly short circuited under normal operating condition?

 Power transformer.
 CT.
 PT.
 Distribution transformer.

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Measurement and Instrumentation
Ratio of readings of two wattmeter connected to measure power in a balanced 3-phase load is 5:3 and the load is inductive. The power factor at load is

 0.917 lag.
 0.6 lag.
 0.917 lead.
 0.6 lead.

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Measurement and Instrumentation
Direct method is used to measure

Temperature
Length
Pressure
Voltage

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Measurement and Instrumentation
Which amplifier in used in an electronic amplifier?

 Wideband amplifier.
 Butter amplifer.
 Power amplifier.
 Differential amplifier.

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Measurement and Instrumentation
A moving iron ammeter may be compensated for frequency errors by

A shunt resistance
A series inductance
Series resistance
Shunt capacitance

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Measurement and Instrumentation
When a potentiometer is used for measurement of voltage of an unknown source, the power consumed in the circuit of the unknown source under null condition is

 high.
 ideally zero.
 very high.
 small.

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MORE MCQ ON Measurement and Instrumentation

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