More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
Physics FSC Part 2 Chapter 16 Online MCQ's Test MCQs With Answers
Question # 1
X
1
is low for low frequency Fy but Xc is.
Choose an answer
Zero
Low
High
Same is H
Previous
Skip
Next
Question # 2
The main use of A.C is
Choose an answer
Minimum line losses
Long distance transmission
Stepping up to required voltage only
Steeping down to required voltage only
Previous
Skip
Next
Question # 3
The condition of resonance is:
Choose an answer
XL = 1/2 Xc
X
L
= X
c
X
c
= 4
x2
None of above
Previous
Skip
Next
Question # 4
The most common source of an A.C. Voltage is.
Choose an answer
Motor
Cell
Generator
Thermo couple
Previous
Skip
Next
Question # 5
X
L
=
Choose an answer
2πfL
1/2πfL
2πfL
fL/2π
Previous
Skip
Next
Question # 6
100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.
Choose an answer
30.8 Ohm
31.8 Ohm
34.8 Ohm
40 Ohm
Previous
Skip
Next
Question # 7
Choke consumes extremely small
Choose an answer
Current
Charge
Power
Potential
Previous
Skip
Next
Question # 8
At high frequency, the current through a capacitor is
Choose an answer
Small
Infinity
Zero
Large
Previous
Skip
Next
Question # 9
During each cycle A.C. voltage reaches a peak value.
Choose an answer
Once
Twice
Thrice
Four time
Previous
Skip
Next
Question # 10
The phase difference between current and voltage in an inductive circuit is.
Choose an answer
zero
90
o
180
o
45
o
Previous
Skip
Next
Question # 11
In A.C circuit of inductor which one is true
Choose an answer
Voltage leads current by phase angle π/2
Voltage lags current by π/2
Current leads voltage by π/2
Both remain in phase
Previous
Skip
Next
Question # 12
The combined effect of resistance and reactance in circuit is called:
Choose an answer
Impedance
Inductance
Capacitance
None of above
Previous
Skip
Next
Question # 13
The effective value of any sinusoidal alternating current or voltage is
Choose an answer
None of the above
Previous
Skip
Next
Question # 14
The combined effect of resistance and reactance is knows as.
Choose an answer
Inductance
Conductance
Resistance
Impedance
Previous
Skip
Next
Question # 15
Direct current can not flow through.
Choose an answer
Inductor
Resistor
Transistor
Capacitor
Previous
Skip
Next
Question # 16
SI unit of reactance is.
Choose an answer
Ohm
Mho
Farad
Henry
Previous
Skip
Next
Question # 17
The Basic circuit element in a D.C. circuits which controls the current and voltage is
Choose an answer
Resistor
Inductor
Capisitor
Transistor
Previous
Skip
Next
Question # 18
The highest value reached by the voltage or current is one cycle is called:
Choose an answer
Peak to peak value
Peak value
Instantaneous value
Root mean square value
Previous
Skip
Next
Back