RECTIFIERS AND CONVERTERS QUIZ

How many time-base circuits does a dual face CRO can have?

1.

3.

4.

2.

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How many fundamental units are there ?

8

4

6

7

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Two capacitance, C1 = 150 ± 2.4µF and C2 = 120 ± 1.5 µF are connected in parallel. What is the limiting error of the resultant capacitance C (in µF) ?

1.5µF

0.9µF

3.9µF

2.4µF

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The pointer of an indicating instrument should be

Either light or heavy

Very heavy

None of the listed here

Very light

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When the pointer of an indicating instrument comes to rest in the final deflected position, ______

None of the listed here

Both deflecting and controlling torques act

Only controlling torque acts

Only deflecting torque acts

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The pressure coil of a wattmeter should be connected on the supply side of the current coil when

Supply voltage is low

Load impedance is high

Load impedance is low

None of these

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Resistances can be measured with the help of

Ammeters

Wattmeters

Voltmeters

Ohmmeters and resistance bridges

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In a CRO which of following is not a part of electron gun?

Grid

Accelerating anode

Cathode

X-Y plates

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Which of the following meter is most suitable for measuring radio frequency currents?

Thermocouple meter.

Moving - iron meter.

Moving - coil meter.

VTVM.

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A 0 - 100 V voltmeter has a guaranteed accuracy of 2 % of full scale reading. The voltage measured by the voltmeter is 75 V. The limiting error is in percentage

3.33 %.

1 %.

2 %.

2.66 %.

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