Module_Revision_1

Module Revision

Variant 1

 

Group ____________________

Name ________________________________

_/___________

 

Vocabulary

Match the words with definitions

1

main source of electrical power

A

2

emergency source of electrical power

B

3

conductor

C

4

electricity

D

5

high voltage

E

6

low voltage

F

7

transformer

G

8

nucleus

H

9

neutron

I

10

charge

J

the positively charged center of an atom.

 

/______

 

Complete the sentences with the correct words or phrases.

to measure

to drive

wires

batteries

generator

gearbox

failure

circuit

AC

shaft

220 V, 50 Hz

320 V, 40 Hz

generators

batteries

generators

transformers

switchboards

 

8/______

 

 

 

Put the words in the correct column.

Processes

Electrically Driven Machinery

 

 

 

12/______

Grammar

1 Correct one mistake in every sentence.

Electricity is creating when a state of unbalanced charges exists.

_____________________________________________________________________________

2. Electrical charges accumulated at one point is calling static electricity.

_____________________________________________________________________________

Different materials have different level of resistances.

_____________________________________________________________________________

.

_____________________________________________________________________________

Which particles makes up the nucleus?

_____________________________________________________________________________

5/______

2 Choose the correct item.

If Chief Engineer … competent, main engine will be maintained properly.

will be

is

were

If we … silver as a conductor, the wire will be very expensive.

use

to use

used

If we … Voltmeter in parallel, we … get correct readings.

connect; don’t get

will connect; will not get

connect; will not get

If we … the voltage, the amperage … as well.

will increase; increase

increase; will increase

increase, increase

If EMF …, no current … in the wire.

remove; will flow

removed; will flow

is removed; will flow

5/______

.Arrange the words in meaningful sentences.

measure and multimeters voltage, current can resistance.

_____________________________________________________________

multimeter electrician either use measuring an may voltage voltmeter or.

__________________________________________________________________

performed continuity can check tester with a be continuity.

__________________________________________________________________

be a diode can one-way compared valve with a.

__________________________________________________________________

red must black probe positive for be for used and probe –negative.

__________________________________________________________________

10/______

Reading

Read the text and mark the statements as True/ False/ Doesn’t say.

AC Source Select Panel

The AC Source Select panel incorporates an interlocking double pole circuit breaker to select either the generator or shore power for connection to the electrical system. The shore-power select circuit breaker must be in the off position before connecting the shore power cord to the dockside power outlet. A reverse polarity indicator is provided – shore power must not be switched on if a reverse polarity condition is present.

The AC Source select panel:

• provides reverse polarity indication to guard against an incorrectly wired shore power system

• ensures that only the generator or shore power source can be selected at any one time

• switches both line and neutral to ensure that MEN integrity is maintained

• provides separate circuit-overload protection

________ 1. The AC Source Select panel serves to connect the ship’s electrical system to different sources of power.

________ 2. When we have reverse polarity condition we may take in shore power.

________ 3. The AC Source Select panel helps to protect engineers from electrical shock.

________ 4.The AC Source Select panel helps to choose generator and shore power as a simultaneous source of power..

________ 5. Incorrectly wired power system is detected by reverse polarity indication function.

10/______

Writing

 

plug in, red/black jack, selection knob, port, range, probe, reading.

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

_

/______

Module Revision

Variant 2

 

Group ____________________

Name ________________________________

_/___________

 

Vocabulary

Match the words with definitions

1

charge

A

2

series circuit

B

3

wattage

C

4

proton

D

5

resistance

E

6

diode

F

7

current

G

8

selection knob

H

9

electron

I

10

circuit

J

a semiconductor device with two terminals, typically allowing the flow of current in one direction only

 

/______

 

Complete the sentences with the correct words or phrases.

proton/electron

proton/nucleus

protons

electrons

AC

DC

atom

wiring

additional

basic

wattage

conductivity

current

dynamic

continuity

resistance

current

 

8/______

 

 

 

 

 

 

 

 

 

 

Put the words in the correct column.

Processes

Electrically Driven Machinery

 

 

 

12/______

Grammar

1 Correct one mistake in every sentence.

Everything in the universe consist of atoms.

_____________________________________________________________________________

2. Copper wires conducting electricity.

_____________________________________________________________________________

AC travel well over long distances.

_____________________________________________________________________________

.

_____________________________________________________________________________

he current shared between each component connected in parallel?

_____________________________________________________________________________

5/______

2 Choose the correct item.

If the Chief Engineer notices the malfunction, main engine … maintained properly.

will be

is

were

If we take silver as a conductor, our wire … very low resistivity.

Has

have

will has

If we … Ammeter in parallel, we … get correct readings.

connect; get

will connect; will not get

connect; will get

If we … the voltage, the amperage … as well.

will increase; increase

increase; will increase

increase, increase

If EMF …, no current … in the wire.

remove; will flow

removed; will flow

is removed; will flow

5/______

4. Arrange the words in meaningful sentences.

metricmultimetres prefixes use.

__________________________________________________________________

ohms metric volts, prefixes used for and are amps.

__________________________________________________________________

be multimeter a can multitool called.

__________________________________________________________________

is knob used to the parameter chose for selection measuring.

__________________________________________________________________

leads banana-jacks used to the to connect are multimeter.

_____________________________________________________________________________

10/______

Reading

Read the text and mark the statements as True/ False.

In the initial stages of motor installation, the insulation resistance is observed to be more than one thousand megaohms. After some time, the insulation performance starts to degrade at an alarming level because the resistance starts to decay gradually. It is important that the insulation performance is monitored at regular intervals.

Overheating also occurs when an electric motor is forced to operate in a high temperature environment.

It can damage the motor by blocking the cooling fan which causes its temperature to raise. It can also affect the insulating value of the winding insulation if it settles on the motor windings. Shielding devices are available which are used for from dirt.

Corrosion of parts can also cause the motor to vibrate. The alignment of the motor should be checked to eliminate this issue.

 

1

Insulation resistance is to be inspected regularly

T

2

Inappropriate current level can cause overheating of s motor

T

3

Dirt can cause overheating of a motor

T

4

Winding insulation is damaged because of vibration.

T

5

Overcurrent is controlled manually.

T

F

10/______

Writing

 

plug in, red/black jack, selection knob, port, range, probe, reading.

 

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

/______

 

 

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