Q. Eddy currents are essential for the deflecting torque of an induction wattmeter.

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Q. The output of a Piezoelectric crystal has

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Q. The pressure coil of a wattmeter should be connected to the supply side of the current coil when

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Q. A universal RLC bridge uses

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Q. If C is spring constant and θ is deflection, controlling torque is

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Q. To measure moisture in wood, the most suitable method is

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Q. An E transformer is a

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Q. In which of the following instruments is the deflecting torque proportional to dL/dQ where L is inductance of coil and Q is deflection

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Q. In a low power factor wattmeter, the resistance of pressure coil is more than in ordinary wattmeter.

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Q. The moving iron instruments are generally repulsion type.

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Q. The scale of thermocouple instrument is linear.

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Q. Which of the following combinations is not used in thermocouple transducer measurement of temperature?

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Q. The dynamic characteristics of capacitive transducer are similar to those of

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Q. The electrical power to a megger is provided by

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Q. The precision of an instrument indicates its ability to reproduce a certain reading with a given

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Q. Assertion (A): A photovoltaic cell is greatly affected by temperature.

Reason (R): Both germanium and silicon can be used for photovoltaic cells.

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Q. Wagner earthing device eliminates

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Q. The deflection sensitivity of a CRO is generally expressed in

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Q. The response of D'Arsonval galvanometer is over damped if

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Q. Assertion (A): The speed of a shaft can be measured by using a dc tacho generator.

Reason (R): A two phase servometer can also be used as a speed transducer.

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