Question 1

-What is the current through R2 in Figure 16-1(c) if the diode is silicon?

Accepted Answer

A) 0.7 mA 
B) 0 A 
C) 0.3 mA 
D) 25 mA 
A) 0.7 mA 
B) 0 A 
C) 0.3 mA 
D) 25 mA

Question 2

Materials whose molecules arrange themselves into a crystal structure are bound together by:

Accepted Answer

A) full valence shells. 
B) covalent bonding. 
C) sharing valence electrons. 
D) all of these. 
A) full valence shells. 
B) covalent bonding. 
C) sharing valence electrons. 
D) all of these.

Question 3

A common name for a PN junction is the transistor.

Accepted Answer

A) True 
 B)False

Question 4

If the diode in a half-wave rectifier opens, ________.

Accepted Answer

A) the output voltage would not change 
B) the output voltage would equal the transformer secondary voltage 
C) the output ripple would be very small 
D) the output voltage would be zero 
A) the output voltage would not change 
B) the output voltage would equal the transformer secondary voltage 
C) the output ripple would be very small 
D) the output voltage would be zero

Question 5

-If the polarity of the source voltage is reversed in Figure 16-1(c),   is ________.

Accepted Answer

A) 49.3 V 
B) 0 V 
C) 0.7 V 
D) 25 V 
A) 49.3 V 
B) 0 V 
C) 0.7 V 
D) 25 V

Question 6

The formula for load regulation is:

Accepted Answer

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

Question 7

In a P-N diode, the region near the P-N junction is called:

Accepted Answer

A) the diffusion region. 
B) the recombination region. 
C) the neutral region. 
D) the depletion region. 
A) the diffusion region. 
B) the recombination region. 
C) the neutral region. 
D) the depletion region.

Question 8

A full-wave rectifier uses ________ diodes and a transformer with a ________.

Accepted Answer

A) two, single secondary 
B) four, center tap 
C) one, single secondary 
D) two, center tap 
A) two, single secondary 
B) four, center tap 
C) one, single secondary 
D) two, center tap

Question 9

If a 75 VP sine wave is applied to a half-wave rectifier, the diodeʹs peak inverse voltage is ________.

Accepted Answer

A) 37.5 V 
B) 75 V 
C) 150 V 
D) 0 V 
A) 37.5 V 
B) 75 V 
C) 150 V 
D) 0 V

Question 10

A DC voltage that sets the operating conditions of a semiconductor device is called the ________.

Accepted Answer

A) battery 
B) bias 
C) barrier potential 
D) depletion voltage 
A) battery 
B) bias 
C) barrier potential 
D) depletion voltage

Question 11

-If a diode in a half-wave rectifier opens in Figure 16-2, ________.

Accepted Answer

A) the output dc voltage increases and the ripple frequency decreases 
B) the output dc voltage decreases and the ripple voltage increases 
C) the output dc voltage increases and the ripple voltage decreases 
D) the output dc voltage decreases and the ripple voltage decreases 
A) the output dc voltage increases and the ripple frequency decreases 
B) the output dc voltage decreases and the ripple voltage increases 
C) the output dc voltage increases and the ripple voltage decreases 
D) the output dc voltage decreases and the ripple voltage decreases

Question 12

A half-wave rectifier uses four diodes as rectifiers.

Accepted Answer

A) True 
 B)False

Question 13

A forward-biased silicon diode normally drops about 0.7 V.

Accepted Answer

A) True 
 B)False

Question 14

If a half-wave rectifier outputs 58 VP, the diodeʹs PIV should be more than ________.

Accepted Answer

A) 116 V 
B) 15 V 
C) 29 V 
D) 58 V 
A) 116 V 
B) 15 V 
C) 29 V 
D) 58 V

Question 15

If a full-wave rectifier outputs 36 VP, the average output is ________.

Accepted Answer

A) 22.9 V 
B) 76 V 
C) 38 V 
D) 19 V 
A) 22.9 V 
B) 76 V 
C) 38 V 
D) 19 V

Question 16

-Which block in Figure 16-2 will keep the output voltage nearly constant under varying load?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 17

The movement of free electrons is called electron current.

Accepted Answer

A) True 
 B)False

Question 18

Photodiodes will conduct more as the light intensity upon them increases.

Accepted Answer

A) True 
 B)False

Question 19

If a diode in a full-wave rectifier opens, ________.

Accepted Answer

A) the dc output voltage will increase and the ripple frequency will decrease 
B) the dc output voltage will decrease and the ripple frequency will decrease 
C) the dc output voltage will decrease and the ripple voltage will decrease 
D) the dc output voltage will increase and the ripple voltage will decrease 
A) the dc output voltage will increase and the ripple frequency will decrease 
B) the dc output voltage will decrease and the ripple frequency will decrease 
C) the dc output voltage will decrease and the ripple voltage will decrease 
D) the dc output voltage will increase and the ripple voltage will decrease

Question 20

You test a diode with an ohmmeter. The two readings indicate a very low value of resistance. The diode is probably ________.

Accepted Answer

A) conducting heavily 
B) open 
C) normal 
D) shorted 
A) conducting heavily 
B) open 
C) normal 
D) shorted

Exam 16: RL Circuits

-What is the current through R2 in Figure 16-1(c) if the diode is silicon?

Materials whose molecules arrange themselves into a crystal structure are bound together by:

A common name for a PN junction is the transistor.

If the diode in a half-wave rectifier opens, ________.

-If the polarity of the source voltage is reversed in Figure 16-1(c), is ________.

The formula for load regulation is:

In a P-N diode, the region near the P-N junction is called:

A full-wave rectifier uses ________ diodes and a transformer with a ________.

If a 75 VP sine wave is applied to a half-wave rectifier, the diodeʹs peak inverse voltage is ________.

A DC voltage that sets the operating conditions of a semiconductor device is called the ________.

-If a diode in a half-wave rectifier opens in Figure 16-2, ________.

A half-wave rectifier uses four diodes as rectifiers.

A forward-biased silicon diode normally drops about 0.7 V.

If a half-wave rectifier outputs 58 VP, the diodeʹs PIV should be more than ________.

If a full-wave rectifier outputs 36 VP, the average output is ________.

-Which block in Figure 16-2 will keep the output voltage nearly constant under varying load?

The movement of free electrons is called electron current.

Photodiodes will conduct more as the light intensity upon them increases.

If a diode in a full-wave rectifier opens, ________.

You test a diode with an ohmmeter. The two readings indicate a very low value of resistance. The diode is probably ________.

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Energy and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Branch, Loop, and Node Analyses

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Inductors

Transformers

RC Circuits

RlC Circuits and Resonance

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters

A full-wave rectifier uses diodes and a transformer with a .