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Measurement and Instrumentation

Measurement and Instrumentation
Unit of deflection sensitivity of a CRO is

 mm / V.
 mm per mV.
 V / mm.
 meter / volt.

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Measurement and Instrumentation
A 50 Hz bar primary CT has a secondary with 500 turns. The secondary supplies 5 A current into a purely resistive burden of 1Ω. The magnetizing ampere-turn is 200. The phase angle between the primary and secondary current is

 85.4o.
  4.6o.
 175.4o.
 94.6o.

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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

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

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Measurement and Instrumentation
An induction wattmeter can be used for

Ac only
Any of the listed here
Both DC and AC
Dc only

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Measurement and Instrumentation
If an inductance is connected in one arm of the bridge and resistance is the remaining three arms

The bridge cannot be balanced
The bridge can always be balanced
None of the listed here
The bridge can be balanced if the resistance have some specific values

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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

 1.5 V.
 1 V.
 1.7 V.
 1.34 V.

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MORE MCQ ON Measurement and Instrumentation

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