MEASUREMENT AND INSTRUMENTATION QUIZ

For measurement on high voltage capacitors, the suitable bridge is

Modified De santy's bridge

Schering bridge

Any of the listed here

Wein bridge

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On a simple ohmmeter, the 0 Ω mark is _______ of the scale.

Far right

In the middle

Far left

None of the listed here

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In flux meter, the controlling torque is produced by

not provided at all.

crossed coil mechanism.

spring.

weight attached to the moving coil.

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Why is a MISC meter not recommended for DC measurement?

The error is high due to hysteresis effect

The meter does not respond to DC signals

The error is high due to eddy current effect

The meter is calibrated for AC and it’s error for DC would be high

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The internal resistance of a milli-ammeter must be very low for

minimum effect on the current in the circuit.

high accuracy.

high precision.

high sensitivity.

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Alternating current is measured by

Moving iron repulsion type voltmeter

Electrostatic ammeter

Induction ammeter

Permanent magnet type ammeter

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Direct method is used to measure

Temperature

Pressure

Length

Voltage

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A galvanometer with a full scale current of 10 mA has a resistance of 1000 Ω. The multiplying power (the ratio of measured current to galvanometer current) of 100 Ω shunt with this galvanometer is

110.

100.

10.

11.

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A Lissajous pattern on an oscilloscope has 5 horinzontal tangencies and 2 vertical tangencies. The frequency of horizontal input is 100 Hz. The frequency of the vertical will be

400 Hz.

500 Hz.

250 Hz.

625 Hz.

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An Ohmmeter is a

Moving iron instrument

None of the listed here

Dynamometer instrument

Moving coil instrument

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