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Electronics by Sir AL

Total questions: 15

Worksheet time: 5mins

Name
Class
Date
1.

A schematic diagram shows the components of an electronic circuit by means of :

a)

Symbol

b)

Physical Appearance

c)

Construction

d)

Linear

2.

What is the best place for electronic hand tools and equipment?

a)

Tool box

b)

Tool Room

c)

Tool Cabinet

d)

Tool Bag

3.

Which of the following is a non-polarized electronic component?

a)

Transistor

b)

Diode

c)

Resistor

d)

Electronic Capacitor

4.

The voltage rating found in a capacitor is called _____

a)

Peak-reverse voltage

b)

Blow-up voltage

c)

Working voltage

d)

Breakdown voltage

5.

A diode is an electronic part that at all times is expected to do one of the following functions. Which one is it?

a)

allow current to flow in both direction

b)

multiply voltage

c)

allow current to flow in one direction only

d)

not allow any current flow

6.

There are various types of diodes. This diode that acts as a regulator is the ____

a)

Silicon Diode

b)

LED

c)

Crystal Diode

d)

Zener Diode

7.

You will find an electrode nearest the white band on a rectifier. What is it?

a)

Anode

b)

Gate

c)

Cathode

d)

Main terminal

8.

When a diode is tested and the reading is zero, it means the diode is____

a)

Shorted

b)

Leaky

c)

Open

d)

Good

9.

If the transistor is an NPN type, the base is _____

a)

Negative and Positive

b)

Positive

c)

Negative

d)

Common

10.

If the arrow of a transistor symbol is pointing inward. It tells us that the transistor is_____

a)

NPN

b)

Bipolar

c)

PNP

d)

Injunction

11.

In the electronic symbol of a transistor, the electrode with an arrow is the :

a)

Emitter

b)

Collector

c)

Base

d)

Cathode

12.

The production of magnetic field by current in a conductor is _____

a)

Electromagnetism

b)

Magnetism

c)

Ferromagnetism

d)

Diamagnetism

13.

Printed on the dial of an AM radio is an RF band covering _____

a)

kHz 76 - 90 MHz

b)

16 Hz - 20 Hz

c)

88-108 MHz

d)

535 - 1,605 kHz

14.

An ordinary radio can be tuned to different stations. The electronic component responsible for this function is the _____

a)

Tuning Capacitor

b)

IF transformer

c)

Oscillator coil

d)

Detector Diode

15.

Working efficiently is a good work habit. Tinning the tip of a soldering iron refers to:

a)

Cleaning the tip with a sand paper

b)

Making the tip pointed

c)

Cutting the tip

d)

Applying flux to the tip.