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ELEX Pre-Board Exam 2

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ELEX Pre-Board Exam 2
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100 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is a group of circuits that provides timing and signals to all operation in the computer?

Output unit
Memory unit
Control unit
Input unit

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Where does voltage generated in a DC generator depend?

Field resistance and flux
Field and armature currents
Flux and speed
Speed and field resistance

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

__________ is the most influential factor in the switching speed of saturated bipolar transistor

Charge stored
Collector current
HFE
Base current

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is a pi-network?

A Power Incidence Network
A network consisting of one inductor and two capacitors or two inductors and one capacitor
A network consisting entirely of four inductors or four capacitors
An antenna matching network that is isolated form ground

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

__________ is the property of a material which opposes creation of magnetic flux?

Resistance
Permeance
Reluctance
Conductance

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The purpose of cells connected in parallel is to

increase internal resistance
increase voltage output
decrease current capacity
increase current capacity

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What does SI magnetic flux refer?

Weber
Flux
Maxwell
Lines

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