MCQ 1 The electrical power to a Meggar is provided by

(A) AC. generator (B) Battery (C) Permanent magnet D.C. generator (D) Any of the above

MCQ 19 A potentiometer may be used for

(A) Measurement of resistance (B) Measurement of current (C) Calibration of ammeter (D) All of the above

MCQ 20 The pointer of an indicating instrument should be

(A) Very light (B) Very heavy (C) Either or (B) (D) Neither nor (B)

MCQ 11 Induction type single phase energy meters measure electric energy in

(A) kW (B) Wh (C) kWh (D) VAR

MCQ 2 A moving iron instrument can be used for

(A) D.C. only (B) A.C. only (C) Both D.C. and A.C. (D) None of the above

MCQ 18 In order to achieve high accuracy, the slide wire of a potentiometer should be

(A) As long as possible (B) As short as possible (C) Neither too small not too large (D) Very thick

MCQ 24 The power factor of a single phase load can be calculated if the instruments available are

(A) One voltmeter and one ammeter (B) One voltmeter, one ammeter and one wattmeter (C) One voltmeter, one ammeter and one energy meter (D) Any of the above

MCQ 12 An ohmmeter is a

(A) Moving iron instrument (B) Moving coil instrument (C) Dynamometer instrument (D) None of the above

MCQ 3 Systematic errors are

(A) Instrumental errors (B) Environmental errors (C) Observational errors (D) All of the above

MCQ 21 The household energy meter is

(A) An indicating instrument (B) A recording instrument (C) An integrating instrument (D) None of the above

MCQ 9 Resistances can be measured with the help of

(A) Watt-meters (B) Voltmeters (C) Ammeters (D) Ohmmeters and resistance bridges

MCQ 17 _________ is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another,

(A) Tangent galvanometer (B) Meggar (C) Current transformer (D) None of the above

MCQ 4 For measuring a very high resistance we should use

(A) Kelvin's double bridge (B) Wheat stone bridge (C) Meggar (D) None of the above

MCQ 13 Basically a potentiometer is a device for

(A) Comparing two voltages (B) Measuring a current (C) Comparing two currents (D) Measuring a voltage

MCQ 22 An ammeter is a

(A) Secondary instrument (B) Absolute instrument (C) Recording instrument (D) Integrating instrument

MCQ 5 What is the current transformer?

(A) Transformer used with an A.C. ammeter (B) Transformer used with an D.C. ammeter (C) Transformer used with an A.C. voltmeter (D) Transformer used with an D.C. voltmeter

MCQ 16 What is the potential transformer?

(A) Transformer used with an D.C. ammeter (B) Transformer used with an A.C. voltmeter (C) Transformer used with an D.C. ammeter (D) Transformer used with an A.C. voltmeter

MCQ 6 C.T. and P.T. are used for _____________.

(A) measuring low current and voltages (B) measuring very low current and voltages (C) measuring high currents and voltages (D) measuring intermediate currents and voltages

MCQ 10 Turns ration for a C.T. is _________

(A) n = N_p / N_s (B) n = N_s / N_p (C) n = 1 / N_p (D) n = N_s

MCQ 7 The primary winding of a C.T. has ____________.

(A) a larger number of turns (B) no turns at all (C) intermediate number of turns (D) a few turns

MCQ 25 The secondary winding of a C.T. has _____________.

(A) a large number of turns (B) a few turns (C) no turns at all (D) intermediate number of turns

MCQ 23 The primary winding of a P.T. has ______________.

(A) intermediate number of turns (B) no turns at all (C) a larger number of turns (D) a few turns

MCQ 14 The secondary winding of a P.T. has _____________.

(A) a large number of turns (B) intermediate number of turns (C) no turns at all (D) a few turns

MCQ 8 The secondary winding of a P.T. is designed for _____________.

(A) 220 V (B) 2.2 kV (C) 1.1 kV (D) 110 V

MCQ 15 The primary current in a C.T. is _____________.

(A) independent of secondary circuit (B) dependent on the secondary circuit (C) depends on the transformation ratio (D) depends on the nominal ratio