This DGCA Module 03 Electrical Fundamentals Question quiz assesses knowledge on semiconductor physics, electrical components behavior, and circuit calculations. It is designed for learners aiming to understand the basics of electrical engineering, enhancing skills in analyzing electrical properties and components.
Multiplier
Tolerance
Error
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Joule
Joule/sec
Joule/min2
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Voltage transformer
Step up
Ideal
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The magnitude of EMF is indirectly proportional to the magnetic Flux
The magnitude of EMF is directly proportional to the rate of change of Flux
The magnitude of EMF is indirectly proportional to the rate of change of Flux
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Reluctance
Resistance
Permeability
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Proton.
Neutron.
Nucleus.
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L/R
L2 /R.
LR.
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Armature speed and number of series conductors.
Armature speed and field strength.
Armature speed and number of parallel conductors.
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Chemical
Thermal
Light
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Directly proportional
Inversely proportional
Same
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Low pass
High pass
Band pass
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Subtractive
Additive
Same as source voltage
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Low electrical resistance.
No electrical resistance.
High electrical resistance.
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An inverter.
A commutator.
A rectifier.
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50 seconds.
0.83 seconds.
0.02 seconds.
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Temperature
Mass of conductor
Material of conductor
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Opposes the EMF producing it.
Does not affect the EMF producing it.
Aids the EMF producing it.
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Increases
Decreases
Remain same
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Shaded poles.
Interpoles.
Drum-wound armatures in combination with a negatively connected series field.
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Suitable for constant speed use.
High starting torque.
Low starting torque.
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Diamagnetic
Paramagnetic
Ferromagnetic
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Both 1 and 3 true
Both 1 and 2 are true
Only 1 is true
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Reverse the electrical connections to either the field or armature windings.
Rotate the positive brush one commutator segment.
Interchange the wires which connect the motor to the external power source.
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Isotopic.
Acceptor.
Donor.
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Commutating coils.
Interpoles.
Compensating windings.
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0
Maximum negative.
Maximum
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Reluctance
Retentively
Permittivity
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Stop.
Change direction.
Continue to run in the same direction.
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Photo-cell.
LED.
Photo diode.
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Equal to the sum of the individual inductance.
Equal to the inductance of the highest rated inductor.
Less than the inductance of the lowest rated inductor.
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70.7% of maximum value
63.2% of maximum value
63.7% of maximum value
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Unchanged.
Doubled.
Halved.
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Few turns of thin wire.
Many turns of thin wire.
Few turns of thick wire. few turns of thick wire. few turns of thick wire.
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Permittivity
Coercivity
Both
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Rotates speed at which the armature
Strength of the magnetic field.
Number of conductors in the armature.
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In series with the armature
In series with the field.
In parallel with the armature.
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Without knowing the coupling factor the total inductance cannot be found.
2.86mH
35mH
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Compound.
Shunt (parallel).
Series.
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The current is at a maximum
The current through it is zero
It will no longer accept lines of flux.
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Speed of the motor can be more closely controlled.
Motor can be operated in either direction.
Power output of the motor can be more closely controlled.
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Impedance at rated voltage.
Amperes at rated voltage.
Watts at rated voltage.
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The same current as the field.
The same current as the armature.
Induces current in the generator.
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Overcome armature reaction.
Reduce arcing at the brushes.
Reduce field strength.
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IV
IVsinɸ
IVcosɸ
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26 ohm in series with 2 ohm resistor
26 ohm in parallel with 2 ohm resistor
26 ohm in series with 1 ohm resistor
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In the same direction of rotation of the armature.
In the opposite direction of rotation of the armature.
Into alignment with the GNA.
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Decrease speed and increase torque.
Increase speed and increase torque.
Increase speed and decrease torque.
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Either, provided they lay on the MNA.
The same as the next main pole ahead in the direction of rotation.
The same as the next main pole behind in the direction of rotation.
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