C:-Indicating instrument
D:-None of the above
Correct Answer:- Option-A

Question75:-Consider the table given:

Construction Connection Measurement Measurement
Type Type Type Quantity

(P). Moving Iron (R). Series (T). DC only (W). Current
(Q). Moving Coil (S). Parallel (U). AC only (X). Voltage

(V). DC and AC

The all-correct combination that relates all the four columns of the table is:
A:-P-R-V-W, Q-S-T-X, P-S-V-X, Q-R-T-W
B:-P-R-U-W, Q-S-U-X, P-S-U-X, Q-R-U-W
C:-P-R-T-W, Q-S-V-X, P-S-T-X, Q-R-V-W
D:-P-R-V-X, Q-S-V-W, P-S-V-W, Q-R-V-X
Correct Answer:- Option-A

Question76:-Power measurement using dynamometer-type wattmeter in low
current and high current loads yield different errors when the pressure coil and the
current coil are connected differently. Consider the table below:

Current value Coil Connection Type
(P). Low current (R). Pressure coil (T). Load side
(Q). High current (S). Current coil (U). Source side

The all-correct combination that relates the current value, the coil and the
connection type for the least error reading is:

A:-P-S-U, Q-R-U
B:-P-R-T, Q-S-U
C:-P-R-U, Q-S-T
D:-P-S-T, Q-R-T
Correct Answer:- Option-D

Question77:-In two-wattmeter method of three-phase power measurement, let the
watt meter readings are denoted by P1 and P2 respectively. Read the following 7
statements and choose the correct combination that indicates ALL-TRUE
statements.

|. ൧1 5 P2 indicates zero power factor

॥. P1 = P2 indicates unity power factor

Ill. P1 = -P2 indicates zero power factor

1൧ P2 = 0 indicates 0.5 power factor

1/ P2 = 0 indicates zero power factor

\/1. P2 > 0 indicates the power factor is between 0 and 0.5

1/1. P2 < 0 indicates the power factor is between 0.5 and 1

A:-1, IV, VI