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Measurement and Instrumentation

Measurement and Instrumentation
The household energymeter is

An integrating instrument
A recording instrument
None of the listed here
An indicating instrument

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Measurement and Instrumentation
A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is

 50 V.
 25 V.
 100 V.
 200 V.

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Measurement and Instrumentation
A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is

 1.34 V.
 1.7 V.
 1.5 V.
 1 V.

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Measurement and Instrumentation
A variable w is related to three other variables x, y and z as w = xy/z. The variables are measured with meters of accuracy ± 0.5% reading, ± 1% of full scale value and ± 1.5% reading. The actual readings of the three meters are 80, 20 and 50 with 100 being the full scale value for all three. The maximum uncertainty in the measurement of w will be

 ± 5%
 ± 7%
 ± 6%
 ± 8%

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Measurement and Instrumentation
If two 300V full scale voltmeters V1 and V2 having sensitivities of 100 kOhm/V and 150 kOhm/V are connected in series to measure 500V then

 V1 = 250V and V2 = 250V.
 V1 = 0V and V2 = 0V.
 V1 = 300V and V2 = 200V.
 V1 = 200V and V2 = 300V.

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Measurement and Instrumentation
What is the approximate input impedance of a CRO?

 10 MΩ
 1 MΩ
 100 MΩ
 0

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MORE MCQ ON Measurement and Instrumentation

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