Regional Maritime University

1 . Devices that transform signals into different forms are known as

Transducers
Continuous force producing devices
Continuous energy conversion equipment
Force producing devices

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2 . A magnetic subsystem is made up of

Electric circuits such as windings
Magnetic field in the magnetic cores and airgaps
Mechanically movable parts such as a plunger in a linear actuator and a rotor in a rotating electrical machine
All the above

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3 . A mechanical subsystem is made up of

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4 . Force due to both electric and magnetic forces will influence the motion of charged particles

TRUE
FALSE

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5 . Electromagnetic forces determine all essential features of charged particle acceleration and transport

TRUE
FALSE

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6 . when an emf is induced in the same circuit in which the current is changing the effect is called

same-induction
Mutual-induction
Self-induction

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7 . When the current flowing in one coil induces a voltage in an adjacent coil the effect is known as

adjacent-induction
Mutual-induction
Self-induction

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8 . In a transformer, the primary and secondary windings are magnetically linked through the

Primary coil
Secondary coil
Core
Tertiary coil

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9 . The current that flows through the core of a tranformer is responsible for

hysterisis
eddy current
copper losses
current losses

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10 . The current that flows through the windings of a tranformer is responsible for

hysterisis
eddy current
copper losses
current losses

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11 . The losses in a tranformer due to the reversal of the magnetic molecules in the core are known as

hysterisis
eddy current
copper losses
current losses

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12 . In a coil, the voltage leads the current

TRUE
FALSE

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13 . The current used by an electromechanical machine for actual work produces

True power
Apparent power
Reactive power
Magnetic power

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14 . The current used in an electromechanical machine in its magnetic circuit produces

True power
Apparent power
Reactive power
Magnetic power

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15 . The total current used in an electromechanical devise is the resultant of the current that produces active power and that which produces reactive power

TRUE
FALSE

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16 . When a transformer is operating at no load the current at the secondary is

Zero
Maximum
Half
Quarter

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17 . Transformers are usually cooled by

Air
Water
Oil
Grease

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18 . A device which converts electrical energy into mechanical energy or mechanical energy into electrical energy is known as?

motor
electromechanical energy conversion device
generator
transformer

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19 . The electromechanical energy conversion takes place through the medium of a/an

core
electric field
magnetic field
potential barrier

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20 . A ?? converts electrical energy to mechanical energy

motor
generator
transformer
Magnetic power

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21 . A ?? converts mechanical energy to electrical energy

motor
generator
transformer
Magnetic power

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22 . Force due to both electric and magnetic forces will influence the ????... of charged particles.

size
weight
motion
power

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23 . The expression F?=?qE?+?qv??B represents

Faraday's law
Lorentz law
Lenz law
Lorentz force

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24 . The amount of inductive coupling that exists between two coils, expressed as a fraction is known as

Coupling effect
Coupling Coefficient
Coupling capacitor
coupling field

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25 . When the magnetic flux produced by the current flowing through two coils in the same direction, the coils are said to be?

Cumulatively Coupled
Differentially Coupled
opposite couple
additive

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26 . When the magnetic flux produced by the current flowing through two coils in opposite direction, the coils are said to be?

Cumulatively Coupled
Differentially Coupled
opposite couple
additive

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27 . Inductors in series are

Cumulatively Coupled
Differentially Coupled
opposite couple
parallel

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28 . For simplex lap winding, number of parallel paths is equal to the number of poles

TRUE
FALSE

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29 . For simplex wave winding, number of parallel paths is equal to 2

TRUE
FALSE

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30 . Transformers are usually laminated to reduce

hysterisis
eddy current
copper losses
current losses

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31 . ???. detects changes in any physical quantity

Signal Conditioning Unit
sensor
Data representation device
loud speaker

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32 . ??? converts the physical output of a sensor to an electrical quantity.

Signal Conditioning Unit
sensor
Data representation device
microphone

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33 . ??.. presents the measured output to the observer

Signal Conditioning Unit
sensor
Data representation device
amplifier

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34 . Actuators respond to

sound
temperature
a physical quantity with a signal
signals with physical movement

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35 . Sensors respond to

sound
temperature
a physical quantity with a signal
signals with physical movement

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36 . Field winding is supplied by an independent external DC source in

Separately Excited DC Generators
Self Excited DC Generators

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37 . Field winding is connected in series with the armature of the generator

Separately Excited DC Generators
Self Excited DC Generators

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38 . Only shunt field winding is connected in parallel with the armature in

Short Shunt Compound Generator
Long Shunt Compound Generator

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39 . Shunt field winding is connected in parallel with both series field and armature winding in

Short Shunt Compound Generator
Long Shunt Compound Generator

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40 . The effect of mutual inductance between two coils depends upon the distance apart of the coils and their orientation to each other

TRUE
FALSE

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41 . What is Self Analysis?

Analysis for family
Analysis for self
Analysis for friend
None of these

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42 . What is Analysis?

Examination
Survey
Inspection
All of above

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