Q. To measure an emf by dc potentiometer it is necessary to standardise the potentiometer with the help of a standard cell.

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Q. Which of the following transformers has low primary current?

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Q. The phenomenon of creep occurs in

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Q. A D' Arsonval galvanometer is a

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Q. Schering bridge is used to measure

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Q. Gauge factor of a strain gauge is

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Q. Assertion (A): Capacitance effect can be used to measure thickness of sheets, displacement and pressure.

Reason (R): Capacitance between two plates depends on the area of plates, distance between plates and permittivity of medium.

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Q. The total insulation resistance consists of insulation volume resistance and surface leakage resistance.

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Q. Assertion (A): Energy meters use induction principle.

Reason (R): Induction wattmeter is less accurate than a dynamometer wattmeter.

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Q. A dynamometer wattmeter can be used for

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Q. The operating voltage of a megger is about

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Q. An ohmmeter is a

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Q. Loading effect is primarily caused by instruments having

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Q. Capacitive transducer is superior to inductive type for measurement of capacitance because of

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Q. Which of the following effects is used in measurement of magnetic flux?

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Q. It is required to measure pressure using LVDT. The additional device needed is

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Q. Which of the following quantities have same dimension in emu and esu?

1. Current
2. Electrical power
3. Electrical energy

Select the answer as per following codes

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Q. In a dynamometer instrument, the moving coil is pressure coil.

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Q. Load cell uses

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Q. Assertion (A): A dc potentiometer measures the true open circuit emf of a source.

Reason (R): At balance point, a dc potentiometer does not draw any current from the source.

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