Question 1
Quality factor is also known as _________
A. Voltage magnification
B. Current magnification
C. Resistance magnification
D. Impedance magnification
View Answer
Answer: A
Explanation:
Quality factor is also known as voltage magnification because the voltage across the capacitor or inductor in resonance condition is equal to Q times the source voltage.
Question 2
At resonance condition, the voltage across the capacitor and inductor is _________ the source voltage.
A. Greater than
B. Less than
C. Equal to
D. Much less than
View Answer
Answer: A
Explanation:
In the resonance condition, the voltage across the capacitor and inductor is greater than the source voltage because the voltage across the capacitor or inductor in resonance condition is equal to Q times the source voltage.
3. What is the voltage across the capacitor when the source.
Question 3
What is the voltage across the capacitor when the source voltage is 100V and the Q factor is 10?
A. 100V
B. 10V
C. 1000V
D. 0V
View Answer
Answer: C
Explanation:
We know that voltage across the capacitor in resonance condition is equal to Q times the source voltage.
Q=VC/VS where VC is capacitive voltage and VS is source voltage.
10=VC/100
VC=1000 V.
Question 4
Find the Q factor when the voltage across the capacitor is 1000V and the source voltage is 100V.
A. 10
B. 20
C. 30
D. 40
View Answer
Answer: A
Explanation:
We know that voltage across the capacitor in resonance condition is equal to Q times the source voltage.
Q=VC/VS where VC is capacitive voltage and VS is source voltage. Q=1000/100 = 10 V.
Question 5
Find the source voltage when the voltage across the capacitor is 1000V and the Q factor is 10.
A. 10V
B. 200V
C. 100V
D. 90V
View Answer
Answer: C
Explanation:
We know that voltage across the capacitor in resonance condition is equal to Q times the source voltage.
Q=VC/VS where VC is capacitive voltage and VS is source voltage. 10=1000/VS
VS=100 V.
Question 6
What is the voltage across the inductor when the source voltage is 200V and the Q factor is 10?
A. 100V
B. 20V
C. 2000V
D. 0V
View Answer
Answer: C
Explanation:
We know that voltage across the capacitor in resonance condition is equal to Q times the source voltage.
Q=VL/VS where VL is inductive voltage and VS is source voltage. 10=VL/200 => VL = 2000 V.
Question 7
Find the Q factor when the voltage across the inductor is 2000V and the source voltage is 100V.
A. 10
B. 20
C. 30
D. 40
View Answer
Answer: B
Explanation:
We know that voltage across the capacitor in resonance condition is equal to Q times the source voltage.
Q=VL/VS where VL is inductive voltage and VS is source voltage. Q=2000/100=20.
Question 8
Find the source voltage when the voltage across the inductor is 2000V and the Q factor is 20.
A. 10V
B. 200V
C. 100V
D. 90V
View Answer
Answer: C
Explanation:
We know that voltage across the capacitor in resonance condition is equal to Q times the source voltage.
Q=VL/VS where VL is inductive voltage and VS is source voltage.
20=2000/VS
VS=100 V.
Question 9
What happens to the voltage across the capacitor when the Q factor increases?
A. Increases
B. Decreases
C. Remains the same
D. Becomes zero
View Answer
Answer: A
Explanation:
We know that voltage across the capacitor in resonance condition is equal to Q times the source voltage. Hence as the Q factor increases, the voltage across the capacitor also increases.
Question 10
What happens to the voltage across the inductor when the Q factor decreases?
A. Increases
B. Decreases
C. Remains the same
D. Becomes zero
View Answer
Answer: B
Explanation:
We know that voltage across the inductor in resonance condition is equal to Q times the source voltage. Hence as the Q factor decreases, the voltage across the inductor also decreases.