Top 150+ Solved Measurement and Instrumentation MCQ Questions Answer
Q. In an AC. co-ordinate potentiometer, the currents in the phase and quadraturepotentiometer are adjusted to be
a. out of phase by 90°
b. out of phase by 60°
c. out of phase by 30°
d. out of phase by 0°
Q. A universal RLC bridge uses
a. Maxwell bridge configuration for measurement of inductance and De Santas bridge for measurement of capacitance
b. Maxwell Wein bridge for measurement of inductance and modified De Santy's bridge for measurement of capacitance
c. Maxwell Wein bridge for measurement of inductance and Wein bridge for measurement of capacitance
d. Any of the above.
Q. For measurements on high voltage capacitors, the suitable bridge is
a. Wein bridge
b. Modified De Santy's bridge
c. Schering bridge
d. Any of the above
Q. In an Anderson bridge, the unknown inductance is measured in terms of
a. known inductance and resistance
b. known capacitance and resistance
c. known resistance
d. known inductance
Q. Wagner earthing device is used to eliminate errors due to
a. electrostatic coupling
b. electromagnetic coupling
c. both (a) and (b)
d. none of the above
Q. For measurement of mutual inductance we can use
a. Anderson bridge
b. Maxwell's bridge
c. Heaviside bridge
d. Any of the above
Q. For measurement of inductance having high value, we should use
a. Maxwell's bridge
b. Maxwell Wein bridge
c. Hay's bridge
d. Any of the above
Q. If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is
a. 10°
b. 80°
c. 120°
d. 170°
Q. In a Schering bridge the potential of the detector above earth potential is
a. a few volts only
b. 1 kV
c. 5 kV
d. 10 kV
Q. To avoid the effect of stray magnetic field in A.C. bridges we can use
a. magnetic screening
b. Wagner earthing device
c. wave filters
d. any of the above
Q. If an inductance is connected in one arm of bridge and resistances in the remaining three arms
a. the bridge can always be balanced
b. the bridge cannot be balanced
c. the bridge can be balanced if the resistances have some specific values
d. none
Q. A power factor meter has
a. one current circuit and two pres¬sure circuits
b. one current circuit and one pressure circuit
c. two current circuits and one pres¬sure circuit
d. none of the above
Q. The two pressure coils of a single phase power factor meter have
a. the same dimensions and the same number of turns
b. the same dimension but different number of turns
c. the same number of turns but different dimensions
d. none of the above
Q. In a single phase power factor meter the phase difference between the currents in the twopressure coils is
a. exactly 0°
b. approximately 0°
c. exactly 90°
d. approximately 90°
Q. In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at
a. 0°
b. 60°
c. 90°
d. 120°