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Worksheetsdomestic appliances
Total questions: 30
Worksheet time: 27mins
When the switch is in the ‘ON’ position, the electric circuit is said to be
Closed
Open
Complete
Both closed and complete
In a bulb there is a thin wire called
filament
coil
fuse
element
Circuit breaker device which can be used in place of fuse in domestic electric wiring is called
CBD
DCB
MCD
MCB
Which of the following is not a reason for excessive currents in electrical circuits?
Direct touching of wires
Short circuiting
Switch in ‘off position
Overloading
What's it for?
To crush
To cook rice
Boil water
To mix
What is the name of this?
kettle
hair dryer
iron
electric shaver
You have to use it after work out in the gym.
kitchen hood
bath
sewing machine
You switch it on when it's hot.
fan
stove
oven
You use it if you want to prepare a mask.
mousetrap
sewing machine
torch
You use it sometimes after a shower.
sink
bath
hair dryer
You use it if you want to cook something.
fridge
dishwasher
cooker
You wash your dirty clothes in it.
towel
dishwasher
washing machine
freezer
What is this?
Estove
Sttove
Stove
Stoove
What is the frequency and voltage of the UK mains electricity supply?
230 V, 50 Hz
120 V, 60 Hz
240 V, 60 Hz
220 V, 50 Hz
Define alternating current.
A type of electrical current in which the direction of the flow of electrons switches back and forth at regular intervals or cycles.
A type of electrical current that flows in one direction only.
A type of electrical current used primarily in batteries.
A type of electrical current that increases in amplitude over time.
Define direct current.
A type of electrical current in which the flow of electrons is in one direction only.
A type of electrical current in which the flow of electrons reverses direction periodically.
A type of electrical current that varies in magnitude and direction.
A type of electrical current that flows in multiple directions.
Is mains electricity an a.c supply or a d.c supply?
a.c supply
d.c supply
What are units of energy measured in?
Joules
Watts
Kilowatt-hours
Newtons
What unit of power is normally used for domestic electricity?
Kilowatt
Joule
Newton
Ampere
__________________ occurs when the live and neutral wires come in the direct contact
Overloading
Short Circuit
Fluctuation of current
low voltage
Electric fuse is placed in series with the __________ wire.
live
parallel
neutral
earth
As per old convention, live wire is ________, neutral wire is ___________ & earth wire is __________.
red, blue, green respectively
green, black, yellow respectively
red, black, green respectively
black, red, blue respectively
In our country, the potential difference between the live & neutral wire is
220 V
110 V
50 V
440 V
At the time of short circuit, the current in the circuit
reduces substantially.
does not change.
increases heavily.
vary continuously
In a plug, which wire is the fuse wire connected to?
The live wire
The neural wire
The earth wire
None of the above
Which scenario most necessitates the earth wire?
An appliance with a plastic case.
An appliance with a metal case.
An appliance with a 12V power supply.
Which statement best describes a fuse?
A device that controls the current running through an appliance.
An adaptor that transforms the voltage in the circuit into current.
A safety feature where a piece of wire of a specific thickness melts when the current is too high breaking the circuit.
A safety feature where a piece of wire of a specific thickness melts when the voltage is too high breaking the circuit.
What is the potential difference of the neutral wire?
230V
50V
12V
0V
What is the frequency of the mains?
230V
130V
50Hz
230Hz
what is the name of this?
blender
microwave oven
refrigerator
Toaster
