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IMI AUTOMOTVE KNOWLEDGE

Total questions: 43

Worksheet time: 27mins

Name
Class
Date
1.
The component that acts as a switching device within a starter motor
a)
Commutator
b)
Armature
c)
Solenoid
d)
Pinion gear
2.
The coil windings within a starter motor are held within which component
a)
Commutator
b)
Armature
c)
Solenoid
d)
Pinion gear
3.
The device fitted to a starter motor to prevent it being driven by the flywheel once the engine has started
a)
Bushes
b)
Rectifier
c)
One way clutch
d)
Pinion gear
4.
Transmits the drive from the starter motor to the engine
a)
Bushes
b)
One way clutch
c)
Armature
d)
Pinion gear
5.
When a starter motor begins to turn it produces a high….
a)
Speed
b)
Inertia
c)
Torque
d)
Charge
6.
The gear ratio between the starter motor and the flywheel ring gear gives a reduction in…
a)
Speed
b)
Inertia
c)
Torque
d)
Charge
7.
What is the function of the starter solenoid?
a)
To slow down the starter motor
b)
To drive the engine
c)
To engage the shift lever
8.
Where does the current, that flows through the solenoid contacts flow to?
a)
The hold in coil
b)
The electric motor
c)
The pull in coil
9.
Whats the main difference between a starter solenoid and a traditional solenoid?
a)
A starter solenoid supplies electricity to the electric motor as well as mechanical movement to the drive lever and pinion
b)
A starter solenoid requires intensive maintenance 
c)
In a starter solenoid a large current is switched by a small current
10.
Which of the following is not a part of the starter solenoid?
a)
Hold in coil
b)
Pull in coil
c)
Iron core
d)
Safety coil
11.
During a starter current-draw test the following results were noted: Voltage—9.4 volts. Current draw—363 amps. The specifications for the maximum current draw are 180 amps. 
a)
Technician A says the test results indicate that the battery may be defective and should be tested.
b)
Technician B says the test results indicate a faulty natural safety start switch circuit.
c)
Both are correct.
d)
Neither are correct
12.
A 600-mV drop is measured across the starter motor solenoid while the engine is being cranked. What is the repair?
a)
    Replace the battery.
b)
   Replace the starter motor.
c)
   Confirm cable connections.
13.
Quick starter test results.
If when you have the head lights on and you try and start the engine and the lights stay bright. What might be the problem?
a)
Probably caused by a poor battery connection
b)
Battery may be discharged
c)
May be caused by an engine mechanical condition
d)
Possibly caused by an open circuit
14.

Which circuit is a complete circuit?

a)

Circuit A

b)

Circuit B

15.

A fluids resistance to flow is:

a)

Thickness

b)

Pour-ability

c)

Viscosity

d)

Grade

16.

What does the "W" in a mult-viscosity stand for?

a)

Wicked

b)

Weight

c)

Warranty

d)

Winter

17.

Which are COMMON multi-viscosity oils:

a)

0W20

b)

10W30

c)

5W20

d)

All answers are common

18.

What is the recommended oil change mileage for Synthetic oil?

a)

3,000 Miles

b)

5,000 Miles

c)

10,000 Miles

d)

Lifetime Oil

19.

What are the 2 types of oil pumps?

a)

Rotor and Gear

b)

Electric and Rotor

c)

Electric and Gear

d)

Rotor and Belt Driven

20.

Where is oil stored when the engine is off?

a)

Cylinder Head

b)

External Storage Tank

c)

Combustion Chamber

d)

Oil Pan

21.

What maintenance item collects dirt/debris in engine oil?

a)

Oil Pump Strainer

b)

Oil Screen

c)

Oil Filter

d)

Oil regenerator

22.

True or False? Engine lubrication systems have a pressure relief valve.

a)

True

b)

False

23.

Green fluid is found under a customers car. This can be cause by:

a)

Leaking water pump

b)

Split cooling pipe

c)

Leaking radiator

d)

Any of these can be the cause.

24.

Bonus:

If an engine suddenly has multiple oil leaks from multiple gaskets what would the most likely cause be?

a)

Clogged PCV Valve

b)

A plugged oil filter

c)

A clogged heater core

d)

Low engine compression

25.

What do alternators and dynamos use to produce electric power?

a)

Chemical reactions

b)

Magnetic fields

c)

Mechanical energy

d)

Solar energy

26.

Which of the following vehicles uses alternators to charge their batteries?

a)

Cars

b)

Electric scooters

c)

Bicycles

d)

Sailboats

27.

What is the main difference between alternating current and direct current?

a)

The color of the wire

b)

The direction of electron flow

c)

The source of power

d)

The speed of electron flow

28.

What does an alternator generate?

a)

Static electricity

b)

Magnetic fields

c)

Direct current

d)

Alternating current

29.

What is used by a dynamo to generate direct current?

a)

A constant magnetic field

b)

A change in magnetic field

c)

Solar panels

d)

A battery

30.

What is the role of commutator rings in an alternator?

a)

They connect the wire coil to complete the circuit

b)

They break the circuit

c)

They store electric energy

d)

They convert AC to DC

31.

What happens to the potential difference when the wire coil is not cutting the magnetic field?

a)

It reverses direction

b)

It drops to zero

c)

It increases

d)

It remains constant

32.

What does the split ring commutator do in a dynamo?

a)

Decreases the current

b)

Keeps the direction of current constant

c)

Increases the current

d)

Changes the direction of current

33.

How can the size of the current be increased?

a)

By increasing the size of the magnetic field

b)

By decreasing the number of turns on the coil

c)

By slowing down the rotation speed of the coil

d)

By using a smaller coil

34.

The alternator converts _ energy into _

a)

Kinetic into Mechanical energy

b)

Electrical into Mechanical energy

c)

Mechanical into Electrical energy

d)

Electrical into Kinetic energy

35.

An alternator is known as a what?

a)

An electro magnetic component

b)

An electro mechanical component

c)

An electro generator

d)

A dynamo

36.

What are the three main alternator components?

a)

Stator

b)

Rotor

c)

Pulley

d)

Rectifier

e)

Belt

37.

There are how many windings in the stator?

(a)  

38.

Where does the magnetic field come from?

a)

Field voltage

b)

The stator & rotor

c)

Brushes & slip rings

d)

The rectifier & regulator

39.

What is the degree angle for each winding set inside the stator?

(a)  

40.

What does the rectifier do in an alternator?

a)

Convert AC to BC

b)

Convert DC to AC

c)

Convert AC to DC

d)

Convert DC to BC

41.

Rectification is usually achieved by using how many diodes?

(a)  

42.

What does the regulator do inside an alternator?

a)

Charges the battery

b)

Changes AC to DC

c)

Holds output voltages consistent

d)

Prevents damage to components

43.

Why is voltage regulated?

a)

Protect battery

b)

Protect belts

c)

Protect casing

d)

Protect ECU & sensors

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