Canadian Basic pool, section 4-02

Basic

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Subelement 4

Circuit Components

Section 4-02

diode fundamentals

4-02-01

Zener diodes are used as:

A.
current regulators
Correct Answer
B.
voltage regulators
C.
RF detectors
D.
AF detectors

4-02-01

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4-02-02

One important application for diodes is recovering information from transmitted signals. This is referred to as:

A.
regeneration
B.
ionization
C.
biasing
Correct Answer
D.
demodulation

4-02-02

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4-02-03

The primary purpose of a Zener diode is to:

A.
provide a voltage phase shift
Correct Answer
B.
regulate or maintain a constant voltage
C.
to boost the power supply voltage
D.
provide a path through which current can flow

4-02-03

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4-02-04

The action of changing alternating current to direct current is called:

A.
amplification
Correct Answer
B.
rectification
C.
transformation
D.
modulation

4-02-04

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4-02-05

The electrodes of a semi- conductor diode are known as:

A.
gate and source
Correct Answer
B.
anode and cathode
C.
collector and base
D.
cathode and drain

4-02-05

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4-02-06

If alternating current is applied to the anode of a diode, what would you expect to see at the cathode?

A.
No signal
B.
Steady direct current
Correct Answer
C.
Pulsating direct current
D.
Pulsating alternating current

4-02-06

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4-02-07

In a semi-conductor diode, electrons flow from:

A.
anode to cathode
B.
cathode to grid
C.
grid to anode
Correct Answer
D.
cathode to anode

4-02-07

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4-02-08

What semi-conductor device glows red, yellow, or green, depending upon its chemical composition?

Correct Answer
A.
A light-emitting diode
B.
A fluorescent bulb
C.
A neon bulb
D.
A vacuum diode

4-02-08

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4-02-09

Voltage regulation is the principal application of the:

A.
junction diode
B.
light-emitting diode
C.
vacuum diode
Correct Answer
D.
Zener diode

4-02-09

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4-02-10

In order for a diode to conduct, it must be:

A.
close coupled
Correct Answer
B.
forward-biased
C.
enhanced
D.
reverse-biased

4-02-10

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