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Measurement and Instrumentation

Measurement and Instrumentation
A CRO can display

Both AC and DC signals
Time invariant signals
DC signals
AC signals

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Measurement and Instrumentation
Resolution of an instrument is

 ability to distinguish polarity.
 the maximum quantity it can measure.
 the maximum non linearity.
 the minimum quantity it can measure.

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Measurement and Instrumentation
For measuring an AC voltage by an AC potentiometer it is desirable that the supply for the potentiometer is taken from

 Any of above.
 A battery.
 The same source as the unknown voltage.
 A source other than the source of unknown voltage.

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Measurement and Instrumentation
A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be

 100 W.
 25 W.
 50 W.
  0 W.

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Measurement and Instrumentation
The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. If this meter is to have full deflection at 5A, what is the value of the shunt resistance to be used?

49.99 Ohms
1/49.99 ohms
1 Ohm
2 Ohms

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Measurement and Instrumentation
A CRO probe has an impedance of 500 kΩ in parallel with a capacitance of 10 pF. The probe is used to measure the voltage between P and Q as shown in figure. The measured voltage will be

 4.54 V.
 4.38 V.
 3.53 V.
 5 V.

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MORE MCQ ON Measurement and Instrumentation

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