ECET 299 Active Circuits and Digital Circuits- ECET 299 AC & DC Week 10 Final Attempt 3 Current Exam

MC Week 10, Final Attempt 3(Current Exam)
(TCO 2)
In a
diode, the
bias
conditions
are(7 points)
positive and negative.

blocking and nonblocking.

open and closed.

forward and reverse.

Boylestad and Nashelsky, Chapter 1.6
Instructor Explanation:

MC Week 10, Final Attempt 3(Current Exam)
(TCO 2) If the anode of a diode is -10 V with reference to
ground and the diode is forward biased, what is the voltage on
the cathode with respect to ground?(7 points)
-10.7V

-10V

0V

+10V

Boylestad and Nashelsky, Chapter 1.6
Instructor Explanation:

MC Week 10, Final Attempt 3(Current Exam)
(TCO 2) A 1 A diode can deliver 1 A up to 75 ºC with a derating
factor of 8.5 mA/ ºC above that. How much current can be
drawn at 110 ºC?(7 points)
0.298 A

0.702 A

1.000 A

1.298 A

Boylestad and Nashelsky, Chapter 1.6
Instructor Explanation:

MC Week 10, Final Attempt 3(Current Exam)
(TCO 2) The zener diode is designed to operate in(7 points)

zener breakdown.

forward bias.

saturation.

cutoff.

Boylestad and Nashelsky, Chapter 1.15
Instructor Explanation:

MC
(TCO 2) In the figure below, E = 20V and R1 = RL = 80Ω. If the Week 10, Final Attempt 3(Current Exam)

zener is ideal with VZ = 8.6V, what is the zener current?

, (7 points)
107.5 mA

142.5 mA

35 mA

70 mA

Boylestad and Nashelsky, Chapter 1.15
Instructor Explanation:

MC Week 10, Final Attempt 3(Current Exam)
(TCO 2) What is the impedance of a zener diode that exhibits a
50 mV change in VZ
for a 2 mA change is IZ?(7 points)
25 Ω

100  Ω

40  Ω

40 Ω

Boylestad and Nashelsky, Chapter 1.15
Instructor Explanation:

MC Week 10, Final Attempt 3(Current Exam)
(TCO 2) Zener diodes are often used as(7 points)

current limiters.

power distributors.

voltage references.

variable resistors.

Boylestad and Nashelsky, Chapter 1.15
Instructor Explanation:

MC Week 10, Final Attempt 3(Current Exam)
(TCO 2) The process of converting ac to pulsing dc is called(7
points)

clipping.

charging.

rectification.

filtering.

Boylestad and Nashelsky, Chapter 2.6
Instructor Explanation:

MC
(TCO 2) What is the output frequency of a full-wave rectifier with Week 10, Final Attempt 3(Current Exam)
a 60 Hz sinusoidal input?(7 points)

, 0 Hz

30 Hz

60 Hz
120 Hz


Instructor Explanation: Boylestad and Nashelsky, Chapter 2.7
MC Week 10, Final Attempt 3(Current Exam)
(TCO 2) The n-type regions in an npn bipolar junction transistor
are(7 points)
collector and base.

collector and emitter.

base and emitter.

collector, base, and emitter.

Instructor Explanation: Boylestad and Nashelsky, Chapter 3.3


MC Week
(TCO 10,
2) In Final
Attemp
normal t
3(Curr
operati ent
on of Exam)

an npn
transist
or, the
base
must
be(7
points)

positive with respect to the collector.

negative with respect to the collector.

positive with respect to the emitter.

negative with respect to the emitter.

Instructor Explanation: Boylestad and Nashelsky, Chapter 3.4
MC Week
(TCO 2) What happens when the base current of a transistor is increased?(7 points) 10,
Final
Attemp
t
3(Curr
ent
Exam)


The collector current increases and the emitter current decreases

The collector current increases and the emitter current increases