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Diagnostic test in Electronics

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.
a)

P

b)

Q

c)

R

d)

S

2.
a)

200m

b)

300m

c)

360m

d)

480m

3.
a)
b)
c)
4.

The foreign atom P is a

a)

monovalent atom

b)

divalent atom

c)

trivalent atom

d)

pentavalent atom

5.
a)
b)
c)
d)
6.
a)

the resistor R is disconnected

b)

the surrounding is bright

c)

the terminals of the battery are reversed

d)

the surrounding is dark

7.
a)

0 0

b)

0 1

c)

1 0

d)

1 1

8.

What should be done so that the bulb will light up?

a)

use a new bulb

b)

increases the number of dry cells

c)

reverse the connection of the diode

d)

connect a resistor in series with the bulb

9.
a)

100Hz, 2V

b)

100Hz, 1V

c)

50Hz, 2V

d)

50Hz, 1V

10.
a)

lnterchange R1 and LDR

b)

Reverse the terminal of the battery

c)

Replace the npn transistor with a pnp transistor

d)

lnterchange R1 and R3

11.

Which transistor circuits will lights up the bulb?

a)
b)
c)
d)
12.
a)

100

b)

101

c)

011

d)

001

13.

If c, b and e have the usual meanings for a transistor, which one of the following transistors is correctly labelled?

a)
b)
c)
d)
14.
a)

Direct current, tIme base off

b)

Direct current, tIme base on

c)

Alternating current, tIme base off

d)

Alternating current, tIme base on

15.
a)

The galvanometer pointer is deflected to the left

b)

The galvanometer pointer is not deflected

c)

The galvanometer pointer is deflected to the right

d)

The galvanometer pointer oscillates to the left and then to the right.

16.
a)

The galvanometer pointer is deflected to the left

b)

The galvanometer pointer is not deflected

c)

The galvanometer pointer is deflected to the right

d)

The galvanometer pointer oscillates to the left and then to the right.

17.

A thermistor and a transistor are connected in a fire alarm circuit. The resistance of the thermistor decreases as the temperature rises.

Which of the following circuits will cause the bell to ring when there is a fire?

a)
b)
c)
d)
18.
a)

OR

b)

AND

c)

NOR

d)

NAND

19.
a)

AND

b)

OR

c)

NOR

d)

NAND

20.

A light-dependent resistor (LDR) is a resistor which is sensitive to light. The resistance of the

LDR is low when surrounding is bright and high in the dark.

Which circuit will light up the bulb at night?

a)
b)
c)
d)
21.
a)

Both Y-input and time base are switched off

b)

Y-input is connected to battery and the time base is switched off

c)

Y-input is connected to alternating current power supply and the time base is switched off

d)

Y-input is connected to alternating current power supply and the time base is switched on

22.
What is safety?
a)
State of free from harm
b)
A button on your 1187 Remington
c)
A pin for holding diapers on
23.
Define Accident.
a)
Unplanned event
b)
Car wreck
c)
Near miss
24.
What is the human body's reaction to trauma or severe injury?
a)
Shock
b)
Jolt
c)
Wrath
25.
What is a one time circuit protection device that OPENS on too much current?
a)
Fuse
b)
Resistor
c)
Switch
d)
Relay
26.
A device that opens on over current like a fuse but can be reset and reused.
a)
Relay
b)
Breaker
c)
Resistor
d)
Deflector
27.
What is another name for electrical shock?
a)
Volt
b)
Jolt
c)
Bolt
d)
Colt
28.
What is a material that allows for current to flow easily called?
a)
Conductor
b)
Capacitor
c)
Inductor
d)
Insulator
29.
What do we call a material that opposes or contains the flow of electrons.
a)
Conductor
b)
Capacitora
c)
Inductor
d)
Insulator
30.
What is Electromotive Force commonly called?
a)
Amperage
b)
Inductance
c)
Resistance
d)
Voltage
31.

_________ App is used for Download the Apps in our LED Tv.

a)

Play Store

b)

App Store

c)

Apple Store

d)

Aptoide

32.

Viewing angle of IMPEX LED Tv Is ___________?

a)

180 degree

b)

178 degree

c)

176 degree

d)

None of the above

33.

4K Resolution also known as

a)

Ultra High Dimension

b)

Ultra High Definition

c)

Ultra Heavy Definition

d)

Ultra Hyper Dimension

34.

What is the Internal Memory of our 4K TV ?

a)

8GB

b)

4GB

c)

16GB

d)

2GB

35.

Maximum audio output of our TV, ___________________?

a)

. 10 watts

b)

15 Watts

c)

20 Watts

d)

40 Watts

36.

Operating Frequency of our TV .................?

a)

50Hz

b)

60Hz

c)

70Hz

d)

Both 50Hz & 60Hz

37.

What is the minimum and maximum operating voltage of our TV ?

a)

90V to 220V

b)

90V to 230V

c)

110V to 240V

d)

90V to 250V

38.

What type of USB drive will support to upgrade software of our TV?

a)

USB 3.0

b)

USB 2.0

c)

USB 3.1

d)

USB 2.1

39.

What is aperture?

a)

The distance between the camera and the subject

b)

The size of the iris which controls the amount of light entering the camera

c)

A measurement of sensitivity to light

40.

Which aperture is larger?

a)

f 2.8

b)

f 5.6

c)

f 22

41.
This term refers to the distance between my foreground object and a background object.
a)
Depth of Field
b)
Shutter Speed
c)
Auto Focus
d)
White Balance
42.
What setting on the camera was adjusted to take this picture?
a)
ISO
b)
Shutter Speed
c)
Aperture
d)
White Balance
43.

Which of the following is not a Creative Mode?

a)

Aperture Value

b)

Time Value

c)

Manual

d)

Night Portrait

44.

Which of the following is NOT true about ISO?

a)

low light demands higher ISO

b)

actions shots use a higher ISO

c)

enlarging the image decreases the noise

d)

the higher the ISO the more noise

45.
a)

Monitor

b)

EPSON

c)

Printer

d)

CPU

46.
a)

Camera

b)

CCTV Camera

c)

Microphone

d)

Speaker

47.

It performs the basic operations of a computer system

a)

Speaker

b)

AVR

c)

System Unit

d)

Printer

48.

It displays the computer's interface

a)

Printer

b)

Scanner

c)

Television

d)

Monitor

49.

It produces audio output aloud

a)

Printer

b)

Monitor

c)

Headphone

d)

Speaker

50.
a)

Television

b)

Laptop

c)

Monitor

d)

Tablet

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