Worksheetsfirst year revision 2
Total questions: 40
Worksheet time: 24mins
Name
Class
Date
1.
What is this symbol for?
a)
electrolytic capacitor
b)
switch
c)
battery
d)
resistor
2.
This is the symbol for ... ?
a)
resistor
b)
PNP transistor
c)
light dependent resistor
d)
variable capacitor
3.
What is this symbol for ?
a)
light dependent resistor
b)
Variable Inductor (coil )
c)
Light EmittingvDiode
( LED )
( LED )
d)
transistor
4.
this is symbol of :
a)
fixed resistor
b)
photo resistor
c)
NPN transistor
d)
photo switch
5.
The symbol of zener diode is in Number
a)
1
b)
2
c)
3
d)
4
6.
this is the symbol for a _____?
a)
switch
b)
light
c)
battery
d)
wires
7.
the resistor:
Brown , Black , Red, Gold
is equal to:
Brown , Black , Red, Gold
is equal to:
a)
10 Ω ± 3%
b)
100 KΩ ± 4%
c)
1 KΩ ± 5%
d)
10 KΩ ± 10%
8.
the resistor color code:
Orange , Orange , Black , Brown
is equal to:
Orange , Orange , Black , Brown
is equal to:
a)
33 kΩ ±1%
b)
330 Ω ±2%
c)
33 Ω ±1%
d)
330 kΩ ±10%
9.
the resistor color code:
Brown , Green , Black , Gold
is equal to:
Brown , Green , Black , Gold
is equal to:
a)
150 Ω ± 5%
b)
15 Ω ± 5%
c)
150 kΩ ± 5%
10.
the current measuring unit is in ____:
a)
Ohm
b)
Ampere
c)
Volt
d)
Watt
11.
What is the purpose of a resistor?
a)
control current flow
b)
allow current flow
c)
prevent current flow
d)
allow heat to build up
12.
What are the color codes for a 470 kΩ ± 5% resistor?
a)
Yellow, Violet, Yellow, Gold
b)
Orange, Grey, Orange, Silver
c)
Yellow, Violet, Orange, Silver
d)
Orange, Grey, Yellow, silver
13.
Color code for 27 kΩ +/-5 %
a)
brown, violet, orange, gold
b)
red, violet, orange, gold
c)
red, violet, red, gold
d)
orange, violet, red, gold
14.
Resistor Value ?
a)
10 MΩ +/- 5 %
b)
10 kΩ +/- 5 %
c)
1 MΩ +/-5 %
d)
100 MΩ +/- 5%
15.
Resistor Value ?
Brown Orange Red Selver
Brown Orange Red Selver
a)
1.4 kΩ +/- 10%
b)
13 kΩ +/- 5%
c)
132 Ω +/- 5%
d)
1.3 k Ω +/- 10%
16.
Name this electronic component
a)
Capacitor
b)
Fixed Resistor
c)
Potentiometer
d)
Transistor
17.
Name this electronic component
a)
Jump Wire
b)
Fixed Resistor
c)
Battery
d)
Diode
18.
Name this electronic component
a)
Ceramic Disc Capacitor
b)
Fixed Resistor
c)
Potentiometer
d)
Electrolytic Capacitor
19.
Name this electronic component
a)
transformer
b)
LED
Light Emitting Diode
Light Emitting Diode
c)
Ciol
d)
Electrolytic Capacitor
20.
Name this electronic component
a)
transformer
b)
LED
Light Emitting Diode
Light Emitting Diode
c)
Zener Diode
d)
speaker
21.
What type of screw and screwdriver is this?
a)
Philips
b)
star
c)
Flat bladed
d)
Flare tipped
22.
Identify this tool
a)
Digital multimeter
b)
Digital therometer
c)
Digital pedometer
d)
Digital weight scale
23.
one of the following is NOT a type of diodes
a)
rectifier diode
b)
LED
c)
zener diode
d)
LDR
24.
As In figure Class A fire is:
a)
Flammable liquids such as petrol
b)
Fires in Electrical Equipments
c)
Solids such as paper, wood, plastic etc
d)
Cooking oils & FATS
25.
The shape shown in figure is for:
a)
Emergency button
b)
on-off Switch
c)
Fire alarm switch
d)
Circuit breaker
26.
The fuel in class F fires is
a)
Electrical equipment
b)
Fammable Liquid
c)
Cooking Oil and fats.
d)
Plastic, wood and paper
27.
in Class D ( combustible metal) Fire , the fire extinguisher that can be used is:
a)
Dry Powder Fire Extinguisher
b)
Water Fire Extinguisher
c)
Foam Fire Extinguisher
d)
CO2 Fire Extinguisher
28.
as in Figure shown the Digital Multimeter measuring mode is
a)
Measuring DC Voltage
b)
Measuring DC Current
c)
Measuring Resistance
d)
Off Mode
29.
the picture showing the correct way of soldering on PCB
a)
true
b)
false
30.
The RED Arrow in figure of IC is refer to :
a)
PIN
b)
plastic case
c)
Small dot
d)
chip
31.
The RED Arrow in figure of IC is refer to :
a)
PIN
b)
plastic case
c)
Notch
d)
chip
32.
the following picture is to:
a)
forward bias
b)
reverse bias
c)
full wave rectifier circuit
d)
half wave rectifier circuit
33.
the following picture is to:
a)
forward bias
b)
reverse bias
c)
full wave rectifier circuit
d)
half wave rectifier circuit
34.
name equipment in the picture
a)
Solder sucker
b)
Solder Station
c)
Magnifying Glass
d)
Strip Board
35.
name tool in the picture
a)
Solder sucker
b)
Solder Station
c)
Magnifying Glass
d)
Strip Board
36.
This is the symbol for ... ?
a)
resistor
b)
PNP transistor
c)
light dependent resistor
d)
variable capacitor
37.
What is this symbol for ?
a)
Inductor ( coil )
b)
LDR
c)
zener diode
d)
transistor
38.
What is this symbol?
a)
heater
b)
diode
c)
light emitting diode
d)
thermistor
39.
Name this electronic component
a)
Jump Wire
b)
Fixed Resistor
c)
Variable Resistor
d)
Diode
40.
Name this electronic component
a)
Ceramic Disc Capacitor
b)
Fixed Resistor
c)
Potentiometer
d)
Electrolytic Capacitor
100 %
