Electrical Components

Question 1

An ohms test on a thermistor indicates 0C=4500 ohms 100C 200 ohms this the of thermistor is…

Answer 1

Negative temperature coefficient

Question 2

A gas discharge bulb contains what?

Answer 2

Electrodes, xenon, mercury and metal salts

Question 3

What is the reflective part of a headlight called

Answer 3

A parabolic

Question 4

How many satellites need to be in view for a sat nav to work?

Answer 4

3

Question 5

Inan SRS system what occurs from 10 to 15 milliseconds after impact

Answer 5

The air bag is inflated then the pre-tensioners tighten up

Question 6

What does a central door locking actuator contain

Answer 6

Drive motor and gear

Question 7

Flemmings left hand rule is related to what

Answer 7

Motors

Question 8

What on a car uses a sun load sensor

Answer 8

Climate control

Question 9

A strain gauge pressure sensor incorporates the of…

Answer 9

Sensing resistors

Question 10

When checking an electric window or mirror, what should be checked first

Answer 10

Fuse

Question 11

How many motors are there on an electric mirror

Answer 11

2

Question 12

What would the symptom be if the system earth failed on an electric window circuit?

Answer 12

Window would not operate

Question 13

What is an electronic device that lets electric current flow only 1 way

Answer 13

Zenor diode

Question 14

How is the compressor engaged on an air conditioning system

Answer 14

Electromagnetically

Question 15

What controls regenerative braking on a hybrid car

Answer 15

The brake pedal

Question 16

What PWM stand for?

Answer 16

Pulse width modulation

Question 17

What should the resistance reading be on a door contact switch when the door is closed

Answer 17

Infinity

Question 18

When testing the voltage of an ABS wheel speed sensor what would happen as the wheels slows?

Answer 18

A decrease in AC voltage