TASK 4 Watch the video 4 Motors and starters

Fill in the missing words:

1. The most commonly used motors on ships are three-phase ______________rotor induction types.

2. The stator windings connection is _______ or ________type.

3. The types are:

- Totally ________, fan ventilated

- Enclosed, ventilated, __________, explosion protected

4. On deck machinery they may be of ____________enclosure.

5. Common faults are:

- ____________

- ______ to start

- Running at ___________

- __________fault

- Single-phasing

6. Special application motors for driving the ___________ deck machinery.

7. They may be either ________ motors or squirrel-cage induction motors of special design, allowing them to run at different __________.

8. They may be ________ rotor type or motors with multiple pole stator construction.

9. Variable voltage Ward Leonard system provides ____________ of the speed of the motor in both directions

10. Two types of single-phase motors are: ____________ and __________start type

11. The most frequently used starters on ships are

- Direct _________ starters (D.O.L.)

- Star_________starters

- Auto________________starters for really heavy duty drives

12. Their function is to start and stop the motor _________ and provide ___________ against the consequences of _________, undervoltage and _______ conditions.

 

 

 

TEST MotorsandGenerators

Write the letter of the correct match next to each problem.

1.   armature a. anarrangementscheme 2.   coil b. an electrical device that provides a path for electrical current to flow 3.   core c. coil in which voltage is induced by motion through a magnetic field 4.   motor d. give something useful or necessary to 5.   supply e. a revolving rod that transmits power or motion 6.   transformer f. an electrical device by which alternating current of one voltage is changed to another voltage 7.   brush g. machine that converts other forms of energy into mechanical energy and so imparts motion 8.   circuit h. conducts current between rotating and stationary parts of a generator or motor 9.   design i. the center of an object 10.   shaft j. a structure consisting of something wound in a continuous series of loops

 

 

KEY: MotorsandGenerators
Write the letter of the correct match next to each problem.
1. c armature a. anarrangementscheme 2. j coil b. an electrical device that provides a path for electrical current to flow 3. i core c. coil in which voltage is induced by motion through a magnetic field 4. g motor d. give something useful or necessary to 5. d supply e. a revolving rod that transmits power or motion 6. f transformer f. an electrical device by which alternating current of one voltage is changed to another voltage 7. h brush g. machine that converts other forms of energy into mechanical energy and so imparts motion 8. b circuit h. conducts current between rotating and stationary parts of a generator or motor 9. a design i. the center of an object 10. e shaft j. a structure consisting of something wound in a continuous series of loops
motors
Please unscramble the words below
1. camanitnnee   2. edrvooal   3. ttuuop   4. bctreiula   5. euyfcneqr   6. xeteirc   7. treifrcei   8. liriaefpm   9. uscea   10. amedag   11. uscenelro   12. sneuer   13. nmeiisrom   14. tigpcihn   15. ittarhgtew   16. sihtnwtad

 

KEY: motors

Please unscramble the words below

1. maintenance   2. overload   3. output   4. lubricate   5. frequency   6. exciter   7. rectifier   8. amplifier   9. cause   10. damage   11. enclosure   12. ensure   13. immersion   14. pitching   15. watertight   16. withstand

 

GENERATORS

Please complete the crossword puzzle below

																			8
											6
																			10			13
																	4
					9
							12														14
															7
															2
													3
										1
					5
							11

 

Across: 1. establish after a calculation, investigation, experiment, survey, or study 5. benefit resulting from some event or action 7. a revolving rod that transmits power or motion 10. conducts current between rotating and stationary parts of a generator or motor 11. an electrical device that provides a path for electrical current to flow 12. a very strong thick rope made of twisted hemp or steel wire 14. the number of occurrences within a given time period

Down: 2. coil in which voltage is induced by motion through a magnetic field 3. engine that converts mechanical energy into electrical energy by electromagnetic induction 4. the act of vibrating 6. activity involved in maintaining something in good working order 8. apply a lubricant to 9. electrical device consisting of a flat insulated surface that contains switches and dials and meters for controlling other electrical devices 13. connection consisting of a metal ring on a rotating part of a machine; provides a continuous electrical connection through brushes on stationary contacts

 

 

KEY (GENERATORS)

Please complete the crossword puzzle below

8l

6m

u

a

10b

r

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13s

h

i

4v

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l

n

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i

i

9c

t

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p

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12c

a

b

l

e

r

a

14f

r

e

q

u

e

n

c

y

n

n

7s

h

a

f

t

i

t

a

t

e

n

r

n

2a

i

g

o

c

3g

r

o

l

1d

e

t

e

r

m

i

n

e

p

n

a

5a

d

v

a

n

t

a

g

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t

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r

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a

r

l

11c

i

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c

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Across: 1. establish after a calculation, investigation, experiment, survey, or study (determine) 5. benefit resulting from some event or action (advantage) 7. a revolving rod that transmits power or motion (shaft) 10. conducts current between rotating and stationary parts of a generator or motor (brush) 11. an electrical device that provides a path for electrical current to flow (circuit) 12. a very strong thick rope made of twisted hemp or steel wire (cable) 14. the number of occurrences within a given time period (frequency)

Down: 2. coil in which voltage is induced by motion through a magnetic field (armature) 3. engine that converts mechanical energy into electrical energy by electromagnetic induction (generator) 4. the act of vibrating (vibration) 6. activity involved in maintaining something in good working order (maintenance) 8. apply a lubricant to (lubricate) 9. electrical device consisting of a flat insulated surface that contains switches and dials and meters for controlling other electrical devices (controlpanel) 13. connection consisting of a metal ring on a rotating part of a machine; provides a continuous electrical connection through brushes on stationary contacts (slipring)

 

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