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Measurement and Instrumentation

Measurement and Instrumentation
In the bridge given in the figure, the reading of the high impedance voltmeter is

 6.66 V.
 - 3.33 V.
 4.20 V.
 Zero.

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Measurement and Instrumentation
In induction type ammeter, _____ damping is provided.

Eaddy current
Fluid friction
Air friction
None of the listed here

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Measurement and Instrumentation
A sinusoidal signal waveform, when observed on an oscilloscope, has a peak to peak amplitude of 6 cm. If the vertical sensitivity setting is 5 v/cm, then rms value of the voltage will be

 12.6 V.
 15 V.
  10.6 V.
 11.1 V.

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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

 25 W.
 100 W.
  0 W.
 50 W.

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Measurement and Instrumentation
A 10MHz CRO has

10MHz vertical oscillator
5MHz sweep
10MHz supply frequency
10MHz horizontal oscillator

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Measurement and Instrumentation
A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read

 + 795 W.
 + 597 W.
 - 795 W.
  - 597 W.

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