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Measurement and Instrumentation

Measurement and Instrumentation
Which wave has the least form factor?

Sine wave
Triangular wave
Square wave
Rectangular wave

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Measurement and Instrumentation
The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures

Power proportional to 3 phase power if the load is balanced
Active power in R phase
Active power of Y phase
Reactive power of R phase

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Measurement and Instrumentation
In flux meter, the controlling torque is produced by

 spring.
 crossed coil mechanism.
 weight attached to the moving coil.
 not provided at all.

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Measurement and Instrumentation
A dynamometer wattmeter can be used for

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

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Measurement and Instrumentation
Piezoelectric effect is carried out in

  m derived.
  crystal filter.
  constant k prototype.
  composite filter.

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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 postioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

 100 Nm.
 1 Nm.
  200 Nm.
 2 Nm.

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MORE MCQ ON Measurement and Instrumentation

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