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Q3 Mechanics and electronics DT GCSE Eduqas

Total questions: 22

Worksheet time: 13mins

Name
Class
Date
1.
What is the name of the following component?
a)
resistor
b)
light dependent resistor
c)
variable resistor
d)
thermistor
2.
A thermistor is used in a circuit to control a piece of equipment automatically. What might this circuit be used for?
a)
lighting an electric lamp as it becomes darker
b)
ringing an alarm bell if a locked door is opened
c)
switching on a water heater at a pre-determined time
d)
 turning on an air conditioner when the temperature rises 
3.
Which electrical component would not normally be found in a battery-operated torch (flashlight)? 
a)
A
b)
B
c)
C
d)
D
4.

Which type of circuits are these sentences referred:

  • Current has only one path to flow
  • Same current flows for each resistor
a)

Series

b)

Parallel

c)

Mix

5.
To make things move, you need a −
a)
force.
b)
strong magnet.
c)
metal object.
d)
helper.
6.

Bike brakes use what kind of motion?

a)

Linear

b)

Reciprocating

c)

Oscillating

d)

Rotating

7.

This toy changes rotational motion to what?

a)

Oscillating

b)

Reciprocating

c)

Linear

8.

An arrow uses what kind of motion?

a)

Linear

b)

Reciprocating

c)

Oscillating

d)

Rotating

9.

What is gear B known as?

a)

Driver

b)

Interlock

c)

Idler

d)

Driven

10.

A metronome uses what kind of motion?

a)

Linear

b)

Reciprocating

c)

Oscillating

d)

Rotating

11.

A hydraulic car jack turns converts __________ to __________ motion.

a)

Rotating- Linear

b)

Reciprocating - Linear

c)

Oscillating- Linear

12.

This shows what kind of lever?

a)

First class

b)

Second class

c)

Third class

13.

A chair lift uses what kind of gear system?

a)

Cam

b)

Rack and pinion

c)

Pulley

d)

Lever

14.

A hand whisk uses what?

a)

Gear system

b)

Rack and pinion

c)

Pulley

d)

Lever

15.

What is missing from the system- Input ___________ Output

a)

Process

b)

Feedback

c)

Development

d)

Design

16.

A diamond shape is used for what in a flowchart?

a)

Process

b)

Input/Output

c)

Decision

d)

Start/Finish

17.

What is this?

a)

LDR

b)

Programmable microcontroller

c)

LED

18.

Which of the following is an example of a closed-loop control system?

a)

A light switch turning a light on and off

b)

A washing machine with a manual dial

c)

A vending machine dispensing snacks

d)

A thermostat controlling room temperature

19.

Which of the following is a characteristic of a first-class lever?

a)

The load is located between the fulcrum and the effort

b)

The fulcrum is located between the load and the effort

c)

The effort is located between the load and the fulcrum

d)

The load and effort are located on the same side of the fulcrum

20.

Which of the following is an advantage of using a gear system?

a)

Reduces the force required to lift an object

b)

Increases the distance an object can travel

c)

Changes the speed and direction of motion

d)

Generates electrical energy

21.

Which of the following is a characteristic of a gear with a large number of teeth?

a)

Rotates faster than a gear with a small number of teeth

b)

Has a smaller diameter than a gear with a small number of teeth

c)

Rotates slower than a gear with a small number of teeth.

d)

Transfers energy less efficiently than a gear with a small number of teeth

22.

Which of the following is an example of a compound gear system?

a)

Two gears of equal size meshing together

b)

A small gear driving a large gear, which then drives a small gear

c)

Two gears with different numbers of teeth meshing together

d)

A gear and a rack meshing together