# BASIC ELECTRICAL PART 10 ONLINE MCQ EE

## BASIC ELECTRICAL PART 10

Category –EE Online Test

Attempt Free BASIC ELECTRICAL PART 10 Here. Read The Important Electrical MCQ From Below.

[1] In ac circuit, the ratio of kW/kVA is
A. Power factor
B. Form factor
D. Diversity factor

[2] Suppose that two ac waves have the same frequency but differ in phase by exactly 1/20 of a cycle. What is the phase difference between these two waves?

A.  18°
B.  20°
C.  36°
D.  5.73°

BASIC ELECTRICAL PART 10

[3] The unit of inductance is

A. Mho
B. Hendry
C. Ohm

[4] What is the angular frequency of the ac signal having a frequency of 1770Hz

D.  Data insufficient

BASIC ELECTRICAL PART 10

[5] Thevenin’s equivalent circuit consists of

A. Series combination of Rth, Eth, Rl
B. Series combination of Rth, Eth
C. Parallel combination of Rth, Eth, Rl
D. Parallel combination of Rth, Eth

[6] The frequency of DC supply is
A. 16 2/3 Hz
B. 60 Hz
C. 50 Hz
D. 0 Hz

[7] Load factor is defined as the ratio of
A. Max demand/ Average demand
B. Average demand/ Connected load
C. Average demand/ Max. demand
D. Connected load/ Max demand

BASIC ELECTRICAL PART 10

[8] Q factor of an inductive coil is given by

A.  2π fL/R
B.  2π fr/R
C.  R/Z
D. lr/l

[9] The rms value of sinusoidal 100V peak to peak is
A. 100 V
B. 50/√2 V
C. 50 V
D. 100/√2 V

BASIC ELECTRICAL PART 10

[10] Which of the following bulbs will have the least resistance?
A. 220V, 60W
B. 220V, 100W
C. 115V, 60W
D. 115V, 100W

Solution Hint:
[2] One cycle = 360°.
1/20 of cycle is 360/20 = 18°

[4] Angular frequency ω = 2πf (rad/s)

BASIC ELECTRICAL PART 10

[7] Some of the important terms in power system:
Demand factor = maximum demand / Connected load Diversity factor = Sum of individual max. demands / Max. demand on power station The ratio of average load to the maximum demand during a given period is known as load factor. Load Factor = Average Load / maximum demand

[8] Quality factor is the ratio of reactive power to average power (Q/P)
Qs = [I2XL]/[I2R]
Qs = XL/R
Qs = ωL/R
Qs =2π fL/R

[9] Vrms = Vm/√2

BASIC ELECTRICAL PART 10