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Electrical Engineering
Capacitors
Quiz 5
Solution
Q.1.
When the plate area of a capacitor increases,
The capacitance increases
The capacitance decreases
The capacitance is unaffected
The voltage it can withstand increases
Q.2.
AkHz voltage is applied to a 0.µF capacitor, andmA of rms current is measured. What is the value of the voltage?
8 V
80 V
800 V
0.88 V
Q.3.
A 0.µF capacitor is across a 2 kHz sine wave signal source. The capacitive reactance is
170 Ω
17 Ω
0.000169 Ω
1.7 Ω
Q.4.
Two 0.µF capacitors are connected in series across akHz sine wave signal source. The total capacitive reactance is
46.8 Ω
4.68 Ω
23.41 Ω
11.70 Ω
Q.5.
A capacitor blocks A.C. but passes D.C.
True
False
Q.6.
The true power in a capacitor is zero.
True
False
Q.7.
A capacitor of 0.µF is larger than
0.000020 F
200,000 pF
2,000 pF
All of the above
Q.8.
ApF capacitor and apF capacitor are each connected across a 6 V dc source. The voltage across thepF capacitor is
3 V
6 V
4 V
0 V
Q.9.
A capacitor of 2,pF is greater than
0.02 µF
0.002 µF
0.0002 µF
0.0000002 F
Q.10.
Five time constants are required for a capacitor to charge fully or discharge fully.
True
False
Q.11.
Voltage leads current byin a capacitor.
True
False
Q.12.
What is the capacitance when Q =µC and V =V?
720 µF
5 µF
50 µF
12 µF
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