EL19 DC machines Revision

EL19 DC machines Revision

10th Grade

50 Qs

quiz-placeholder

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EL19 DC machines Revision

EL19 DC machines Revision

Assessment

Quiz

Education

10th Grade

Medium

Created by

Reiner Glaser

Used 32+ times

FREE Resource

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The image shows the major parts of a d. c. machine.

The parts that require regular maintenance are:

the field windings

the brush gear and commutator

the armature windings

the bearings

the pole shoes

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

DC machines are devices which work by the use of electromagnetism just like transformers, solenoids, relays, etc. However, they have an additional hazard which is:

very strong magnetic fields

rotating parts

higher fault levels

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of these is/are NOT a part of a d.c. generator?

slip rings

commutator

brushes

armature

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which part of a d.c. generator converts the a.c. produced in the coil into d.c. at the generator terminals?

field coils

commutator and brushes

yoke or frame

armature

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The process of generating an EMF in a conductor is called:

electro motive force

electromagnetic induction

generator energy conversion

voltage induction

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

The single loop generator shown, produces maximum output at the:

(select all that apply)

0° coil position

90° coil position

180° coil position

270° coil position

360° coil position

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Generators get their mechanical power from:

batteries

prime movers

transformers

power capacitors

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