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Measurement and Instrumentation

Measurement and Instrumentation
Which instrument has identical calibration for ac as well as dc values?

Moving iron type
Induction type
Moving coil type
Hot wire type

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Measurement and Instrumentation
The given figure shows wein bridge connection for frequency measurement. C and R are variables and gang together. For balanced condition the expression for frequency is f = 1/2πCR when

 R1 = R2.
 R1 = 2R2.
 R1 = 3R2.
 R1 = R2/2.

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Measurement and Instrumentation
Deflection method direct measurements are most widely used as these are

 most simple and least time consuming.
 most simple.
 least time consuming.
 most accurate.

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Measurement and Instrumentation
A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

 100 µNm.
  200 µNm.
 2 µNm.
 1 µNm.

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

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Measurement and Instrumentation
When using ohmmeter, applied voltage is to be disconnected from the circuit because

None of these
Voltage source will increase resistance
Current will decrease resistance
The ohmmeter has its own internal battery

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MORE MCQ ON Measurement and Instrumentation

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