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WorksheetsSmall Appliances
Total questions: 25
Worksheet time: 25mins
What is the use of this home appliance?
to heat food to a desired temperature
to remove dust and small particles
to transmit moving images and sound
What is the use of this home appliance?
to produce visible light from electric power
to cool down a space
to heat food to a desired temperature
What is the danger in this picture?
She is trying to plug more than one appliance into one socket.
(Cô ấy đang cố gắng cắm nhiều thiết bị vào một ổ cắm)
She is touching a damaged wire with exposed metal.
(Cô ấy đang chạm vào chỗ kim loại của sợi dây bị hỏng)
She is using an electrical appliance with wet hands.
(Cô ấy đang sử dụng một thiết bị điện với bàn tay ướt)
Which of the following small appliances uses electromagnetic induction to heat food?
Microwave oven
Toaster
Induction cooktop
Electric kettle
What is the primary energy conversion in a toaster?
Electrical to thermal
Thermal to electrical
Mechanical to thermal
Chemical to electrical
Which small appliance uses a compressor to change the state of a refrigerant?
Blender
Refrigerator
Microwave oven
Electric fan
What is the function of a thermostat in an electric iron?
To convert electrical energy to heat
To regulate temperature
To increase electrical resistance
To decrease power consumption
Which of the following small appliances uses a nichrome wire for its heating element?
Electric heater
Blender
Refrigerator
Electric fan
What type of motor is commonly used in a vacuum cleaner?
Induction motor
DC motor
Universal motor
Stepper motor
Which small appliance uses a piezoelectric crystal to generate sound waves?
Electric toothbrush
Ultrasonic cleaner
Hair dryer
Electric shaver
What is the main purpose of a capacitor in a ceiling fan?
To store electrical energy
To start the motor
To regulate voltage
To convert AC to DC
Which small appliance uses a thermoelectric module for cooling?
Electric kettle
Thermoelectric cooler
Microwave oven
Electric heater
What is the principle behind the operation of a microwave oven?
Convection
Conduction
Radiation
Induction
Which small appliance uses a centrifugal pump to move water?
Electric kettle
Dishwasher
Microwave oven
Electric heater
What is the role of a diode in a hair dryer?
To convert AC to DC
To increase voltage
To decrease current
To regulate temperature
Which small appliance uses a solenoid valve to control fluid flow?
Electric kettle
Washing machine
Microwave oven
Electric heater
What is the main function of a resistor in an electric circuit of a small appliance?
To increase current
To decrease voltage
To limit current
To store energy
Which small appliance uses a heating element to convert electrical energy into heat?
Electric fan
Blender
Electric heater
Refrigerator
What is the primary function of a transformer in a small appliance?
To increase current
To decrease resistance
To change voltage levels
To store energy
Which small appliance uses a fan to circulate air for cooling?
Electric heater
Refrigerator
Microwave oven
Air conditioner
What is the main purpose of a fuse in an electrical appliance?
To increase current
To protect against overcurrent
To decrease voltage
To store energy
Which small appliance uses a heating coil to generate heat?
Electric fan
Blender
Electric heater
Refrigerator
What is the role of a rectifier in a small appliance?
To convert AC to DC
To increase voltage
To decrease current
To regulate temperature
Which small appliance uses a compressor to circulate refrigerant?
Electric kettle
Refrigerator
Microwave oven
Electric heater
What is the principle of operation of an electric kettle?
Convection
Conduction
Radiation
Induction
