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.