A potentiometer cannot be used to:

To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken

A

From a source which is not the same as the unknown voltage

B

From a battery

C

From the same source as the unknown voltage

D

Any of the above

In an AC co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be

A

out of phase by 90°

B

out of phase by 60°

C

out of phase by 30°

D

out of phase by 0°

Which type of potentiometer consists of two separate potentiometer circuits enclosed in a common case?

A

Gall Tinsley AC potentiometer

B

Drysdale Tinsley AC potentiometer

C

Cambell Larsen potentiometer

D

Crompton potentiometer

A potentiometer cannot be used for calibration of ammeter.

A

True

B

False

Which of the following devices cannot be used potentiometer as calibrating device?

A

Wattmeter

B

Energy meter

C

Voltmeter

D

Ammeter

Which of the following cannot be measured using potentiometer?

A

DC voltage

B

Temperature

C

Resistance

D

None of the mentioned

A potentiometer may be used for

A

measurement of resistance

B

measurement of current

C

calibration of ammeter

D

calibration of voltmeter

E

all of the above

Potentiometer is used for:

A

Accurate measurement of emf of a cell or the potential difference (p.d.) between two points of an electric circuit.

B

Measurement of electrical resistance in the cell

C

Measurement of electric current in a cell

D

Measurement of capacitance of cell.

The potentiometer is mainly not used-

A

To compare the EMFs of two primary cells

B

To determine the internal resistance of a primary cell.

C

To determine the value of high capacitance

D

To determine the emf of a cell

When potentiometer is used for the measurement of power, the output of Volt-Ratio box is normally:

A

1.5 V

B

10 V

C

100 V

D

15 V

A potentiometer cannot be used to:

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