MEASUREMENT AND INSTRUMENTATION QUIZ

Spherical type

Electrostatic type

Multiplate parallel plate type

Concentric cylindrical type

 2 represents greater precision but 1 and 3 represent same precision.

 1, 2 and 3 represent same precision.

 1 represents greater precision than 2 and 3.

 2 and 3 represent greater precision than 1.

 The restoring torque is provided by a controlling torque.

 It consist of two coils mounted at right angles to each other.

 Both B and C.

 The deflection is proportional to phase angle between field coil and crossed coil.

 5 V.

 2 V.

 (2 + √3/2)V.

 0 V.

 None of above.

 The precision in measurment is independent of the type of the defector used.

 It is possible to standardize before a measurement is undertaken.

  It is based on null balance technique.

 1 MΩ

 10 MΩ

 0

 100 MΩ

 there is no thermo electric emf.

 it has high sensitivity.

 effect of contact and lead resistance is eliminated.

 resistance variation due to temperature.

 Thermoelectric emfs.

 Resistance of connecting leads.

 All of above.

 Contact resistance.

Induction wattmeter

None of the listed here

Sometimes induction and sometimes dynamometer wattmeter

Dynamometer wattmeter

 0.67 A.

 0.25 A.

 0.50 A.

 0.70 A.