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Worksheets

Control systems

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.

Which one is the INPUT of the device?

a)

Turn the lever

b)

Press the switch

c)

Rotating motor

d)

Linear motion

2.

Which one is the OUTPUT of the device?

a)

Turn the lever

b)

Press the switch

c)

Rotating motor

d)

Linear motion

3.

Which one is the OUTPUT of the device?

a)

Turn the lever

b)

Press the switch

c)

Rotating motor

d)

Linear motion

4.

Which one is the INPUT of the device?

a)

Turn the lever

b)

Press the switch

c)

Rotating motor

d)

Linear motion

5.

Which one is the INPUT of the control system?

a)

Water flows

b)

Water stops

c)

Tap is turned on

d)

Screw mechanism

6.

Which one is the PROCESS of the control system?

a)

Water flows

b)

Water stops

c)

Tap is turned on

d)

Screw mechanism

7.

Which one is the OUTPUT of the control system?

a)

Water flows

b)

Water stops

c)

Tap is turned on

d)

Screw mechanism

8.

Which one is the control system for the ceiling fan?

a)

Open loop control

b)

Closed loop control

9.

Which one is the PROCESS of the control system?

a)

Switch

b)

Speed controller

c)

Motor

10.

Which one is the control system for the air conditioning unit?

a)

Open loop control

b)

Closed loop control

11.

Which one is the PROCESS of the control system?

a)

Temperature comparator

b)

Temperature sensor

c)

Cool air

12.

Which one is the control system of a table lamp?

a)

Open loop control

b)

Closed loop control

13.

Which one is the OUTPUT of the control system?

a)

Light bulb

b)

Electric current

c)

Switch

14.

Which one is the control system of an automatic door?

a)

Open loop control

b)

Closed loop control

15.

Which one is the control system of a tumble drier?

a)

Open loop control

b)

Closed loop control

16.

Which one is the control system of a refrigerator?

a)

Open loop control

b)

Closed loop control

17.

Which one is the control system of a digital thermometer?

a)

Open loop control

b)

Closed loop control

18.

Pneumatic control systems use pressurised air for producing movement. Which ones below use pneumatic control?

a)

Car braking system

b)

Dentist drill

c)

Fire engines ladder

d)

Rollercoaster safety harness

19.

Hydraulic control systems use pressurised liquid for producing movement. Which ones below use hydraulic control?

a)

Car braking system

b)

Dentist drill

c)

Fire engines ladder

d)

Rollercoaster safety harness

20.

Which electrical component is widely used as the PROCESS component for electronic control systems?

a)

Thermistor (temperature sensor)

b)

LDR (light-dependent resistor)

c)

Transistor

d)

LED (light-emitting diode)