Question 1

Capacitance is the ability to store voltage.

Accepted Answer

A) True 
 B)False  False

Question 2

When two capacitors are connected in parallel across a dc source, the smaller capacitor drops the
larger voltage.

Accepted Answer

A) True 
 B)False  False

Question 3

If a   capacitor and a   resistor are connected in series across 25 V   , approximately how much voltage will the resistor drop after charging for just one time constant?

Accepted Answer

A) 23.8 V 
B) 21.6 V 
C) 15.8 V 
D) 9.20 V 
A) 23.8 V 
B) 21.6 V 
C) 15.8 V 
D) 9.20 V D

Question 4

If a   capacitor operates at 10 kHz,   equals ________.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 5

If the frequency applied to a capacitor increases, the capacitive reactance ________.

Accepted Answer

A) decreases 
B) remains the same 
C) varies up and down 
D) increases 
A) decreases 
B) remains the same 
C) varies up and down 
D) increases

Question 6

The time constant of a capacitor is:

Accepted Answer

A) the time required to charge to 63% or discharge to 37%. 
B) directly proportional to the resistance in the circuit. 
C) directly proportional to the capacitance in the circuit. 
D) all of these. 
A) the time required to charge to 63% or discharge to 37%. 
B) directly proportional to the resistance in the circuit. 
C) directly proportional to the capacitance in the circuit. 
D) all of these.

Question 7

Reactive power   in a capacitor is defined as the rate at which a capacitor stores or returns energy and is measured in:

Accepted Answer

A) watts reactive. 
B) volt-ampere reactive. 
C) current per time constant. 
D) volts per time constant. 
A) watts reactive. 
B) volt-ampere reactive. 
C) current per time constant. 
D) volts per time constant.

Question 8

If a   capacitor are connected in series across a 75 V source, the voltage drop across the smallest capacitor equals ________.

Accepted Answer

A) 50 V 
B) 100 V 
C) 37.5 V 
D) 18.8 V 
A) 50 V 
B) 100 V 
C) 37.5 V 
D) 18.8 V

Question 9

If a   capacitor are connected in parallel across a 15 V source, the total capacitance equals   and the   capacitor drops

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 10

What is one time constant of a   capacitor in series with a   resistor?

Accepted Answer

A) 1.03 ms 
B) 103 ms 
C) 0.103 ms 
D) 10.3 ms 
A) 1.03 ms 
B) 103 ms 
C) 0.103 ms 
D) 10.3 ms

Question 11

Leakage through a capacitor is undesirable.

Accepted Answer

A) True 
 B)False

Question 12

If a   capacitor are connected in series across a 25 V source, the total capacitance equals   and each   capacitor drops

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 13

A common use for electrolytic capacitors found in power supplies is ________.

Accepted Answer

A) decoupling 
B) filtering 
C) passing AC 
D) blocking DC 
A) decoupling 
B) filtering 
C) passing AC 
D) blocking DC

Question 14

What is the minimum dc working voltage rating for a capacitor that must drop 120

Accepted Answer

A) 84.8 V 
B) 120 V 
C) 170 V 
D) 339 V 
A) 84.8 V 
B) 120 V 
C) 170 V 
D) 339 V

Question 15

If a   capacitor and a   resistor are connected in series across 20   , approximately how much voltage will the capacitor drop after charging for just one time constant?

Accepted Answer

A) 12.6 V 
B) 11.0 V 
C) 12.1 V 
D) 17 V 
A) 12.6 V 
B) 11.0 V 
C) 12.1 V 
D) 17 V

Question 16

How much charge is stored in a   capacitor that drops 18 V?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 17

A capacitor that transfers an ac signal from one stage to another is called a ________ capacitor.

Accepted Answer

A) filter 
B) coupling 
C) transfer 
D) bypass 
A) filter 
B) coupling 
C) transfer 
D) bypass

Question 18

If a   and   capacitor are connected in series across a 25 V source, the voltage drop across the largest capacitor equals ________.

Accepted Answer

A) 10.2 V 
B) 11.8 V 
C) 17.5 V 
D) 4.51 V 
A) 10.2 V 
B) 11.8 V 
C) 17.5 V 
D) 4.51 V

Question 19

How much charge is stored in a   capacitor that drops 22 V?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 20

A test instrument designed to be used for the testing of capacitors is the ________.

Accepted Answer

A) oscilloscope 
B) LCR Meter 
C) digital multimeter 
D) analog multimeter 
A) oscilloscope 
B) LCR Meter 
C) digital multimeter 
D) analog multimeter

Exam 9: Branch, Loop, and Node Analyses

Capacitance is the ability to store voltage.

When two capacitors are connected in parallel across a dc source, the smaller capacitor drops the larger voltage.

If a capacitor and a resistor are connected in series across 25 V , approximately how much voltage will the resistor drop after charging for just one time constant?

If a capacitor operates at 10 kHz, equals ________.

If the frequency applied to a capacitor increases, the capacitive reactance ________.

The time constant of a capacitor is:

Reactive power in a capacitor is defined as the rate at which a capacitor stores or returns energy and is measured in:

If a capacitor are connected in series across a 75 V source, the voltage drop across the smallest capacitor equals ________.

If a capacitor are connected in parallel across a 15 V source, the total capacitance equals and the capacitor drops

What is one time constant of a capacitor in series with a resistor?

Leakage through a capacitor is undesirable.

If a capacitor are connected in series across a 25 V source, the total capacitance equals and each capacitor drops

A common use for electrolytic capacitors found in power supplies is ________.

What is the minimum dc working voltage rating for a capacitor that must drop 120

If a capacitor and a resistor are connected in series across 20 , approximately how much voltage will the capacitor drop after charging for just one time constant?

How much charge is stored in a capacitor that drops 18 V?

A capacitor that transfers an ac signal from one stage to another is called a ________ capacitor.

If a and capacitor are connected in series across a 25 V source, the voltage drop across the largest capacitor equals ________.

How much charge is stored in a capacitor that drops 22 V?

A test instrument designed to be used for the testing of capacitors is the ________.

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Energy and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Inductors

Transformers

RC Circuits

RL Circuits

RlC Circuits and Resonance

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters