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ELECTRICAL SYSTEM OF TRACTORS

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

What is a current ?

a)

Movement of free protons

b)

Movement of free electrons

c)

Movement of free neutrons

d)

Flow of a liquid

2.

What is the unit of current ?

a)

ohm

b)

Voltage

c)

Ampere

d)

Watt

3.

What is voltage ?

a)

Current consumption

b)

Amount of resistance in the circuit to oppose electron flow

c)

Continuous movement of free electrons through a circuit

d)

The force motivating electrons to "flow" in a circuit

4.

What is Resistance ?

a)

A state of an electrical circuit being completely connected and able to conduct current.

b)

The ability to oppose electron flow.

c)

Force motivating electrons to "flow" in a circuit

d)

Measure of the resisting power of a specified material to the flow of an electric current.

5.

What is Continuity ?

a)

Information in the form of signals

b)

a state of an electrical circuit being completely disconnected and able to conduct current

c)

Continuity is the presence of a complete path for current flow

d)

To avoid over charging of the battery

6.

What is the symbol of resistance ?

a)

V

b)

Ω

c)

A

d)

Q

7.

What is a Digital Multi-meter?

a)

A measuring instrument used to measure the current in a circuit.

b)

An instrument used for measuring electrical potential difference between two points in an electric circuit.

c)

A device which measures AC / DC voltage, resistance, and current in an electric circuit.

d)

An electromechanical instrument used for detecting and indicating an electric current.

8.

Which meter used for checking the battery gravity ?

a)

Voltmeter

b)

Ammeter

c)

Galvanometer

d)

Hydrometer

9.

How many watts is a starter motor ?

a)

2.5 Watt

b)

1.5 Watt

c)

0.5 Watt

d)

1.25 Watt

10.

How many cells are present in a tractor battery and how much voltage does each cell have ?

a)

6 cell, 2.2 Voltage each

b)

13 cell, 4.2 Voltage each

c)

8 cell, 2.1 Voltage each

d)

2 cell, 1.1 Voltage each

11.

What is the specific gravity of a fully charged battery ?

a)

1.265-1.275

b)

1.325-1.435

c)

1.525-1.435

d)

1.150-1.175

12.

Why don't we suggest using grease on battery terminal ?

a)

Grease is a bad conductor

b)

Grease is a good conductor

c)

Grease protect the battery terminals from dust

d)

For better lubrication

13.

Which of the following is the cause of a not charging tractor battery ?

a)

Excessive of petroleum jelly is applied on battery terminals

b)

Lights are switched ON

c)

Battery terminal are tightened very much

d)

Engine fan belt tension is lose

14.

Why should we disconnect the negative battery terminal of the tractor when it is not in use ?

a)

To avoid over charging

b)

Reduce the life of battery

c)

Avoiding the discharging of battery

d)

To avoid damaging the battery terminals

15.

What is the main use of alternator ?

a)

For producing current and convert it from AC to DC current

b)

To convert current from DC to AC current

c)

To adjustment of fan belt tension.

d)

To maintain the flow of current

16.

What is the use starter motor ?

a)

To flow the current into electrical system.

b)

Maintain the voltage fluctuation.

c)

To charge the battery.

d)

Convert electrical energy into mechanical energy and start the engine.

17.

How can we check the continuity if there is no electricity supply ?

a)

By connecting the Multi meter's one thimble on first end of the wire and second on the last end. And if the wire is in good condition then we will hear a beep sound.

b)

with the help of a Hydro-meter

c)

with the help of ammeter

d)

By not changing the wire

18.

Why do we use a battery terminals of shorter length ?

a)

To avoid the battery from being discharged.

b)

To avoid late starting of Engine.

c)

To avoid excessive consumption of current.

d)

To avoid the decrease in the life of battery.

19.

Why fuse gets fused frequently ?

a)

It is a good conductor of electricity

b)

Short circuit in the electrical system by using heavy music system, Low quality of fuse, and additional fog lamps.

c)

By using a heavy fuse wire.

d)

By continuous use of electric lamps.

20.

What is use of electrical neutral safety switch ?

a)

To avoid engine start while the tractor is in gear engage condition.

b)

To avoid fuse wire from being fused.

c)

To avoid overcharging of battery.

d)

To avoid discharging of Battery.

21.

Identify the symbol

(a)  

22.

Identify the image

(a)  

23.

Identify the image

(a)  

24.

Identify the image

(a)  

25.

How many fuses are in the fuse box ?

a)

6 + 2

b)

8+ 2

c)

3+6

d)

5+1