A. wattmeters
B. voltmeters
C. ammeters
D. ohmmeters and resistance bridges
E. all of the above
Related Mcqs:
- 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 - The power of a n-phase circuit can be measured by using a minimum of_______________?
A. (n – 1) wattmeter elements
B. n wattmeter elements
C. (n + 1) wattmeter elements
D. 2n wattmeter elements - 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 - Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?
A. Absolute instruments
B. Indicating instruments
C. Recording instruments
D. Integrating instruments - A direct current can be measured by________________?
A. a D.C. potentiometer directly
B. a D.C. potentiometer in conjunction with a standard resistance
C. a D.C. potentiometer in conjunction with a volt ratio box
D. none of the above - Alternating current is measured by_______________?
A. induction ammeter
B. permanent magnet type ammeter
C. electrostatic ammeter
D. moving iron repulsion type voltmeter - E.m.f. of a Weston cell is accurately measured by________________?
A. electrostatic voltmeter
B. hot wire voltmeter
C. isothermal voltmeter
D. electrodynamic voltmeter - Which of the following is measured by using a vector voltmeter ?
A. Amplifier gain and phase shift
B. Filler transfer functions
C. Complex insersion loss
D. All of the above - To measure a resistance with the help of a potentiometer it is_________________?
A. necessary to standardise the potentiometer
B. not necessary to standardise the potentiometer
C. necessary to use a volt ratio box in conjunction with the potentiometer
D. none of the above - A __________ device prevents the oscillation of the moving system and enables the latter to reach its final position quickly___________?
A. deflecting
B. controlling
C. damping
D. any of the above
