AEEE Unit I Quiz

If slip value is less than 1, it means, the machine is

• motoring

• Braking

• Generating

• Transferring

3-phase induction motor will have_________ starting torque and __________starting current.

• High, Low

• Low, High

• High, High

• Low, Low

In 1831 who discovered electromagnetic induction?

• Thomas Edison
• Nikola Tesla
• Michael Faraday

Which action will increase the deflection of the galvanometer pointer?

• The magnetic pole is reversed

• The number of turns of coils is increased

• The coil is made from insulated wire

• The magnet is slowly pushed into the coil

The process of creating a current in a circuit by changing a magnetic field

• A. electric generator
• B. electric motor
• C. electromagnetic induction
• D. magnet

Electromagnetic induction is taking place in this experiment. How much electricity is being produced?

• -10 Volts
• 10 Volts
• 100 Volts
• This question cannot be answered based on this image

Back emf depends on which one of the following:

• armature speed

• armature current

• armature voltage

• armature resistance

As the number of pole increase the synchronous speed 

• Increase 
• decrease 
• remain same 

Why is the stator core of Alternator laminated?

• to increase heat

• to control hysterisis loss

• to reduce eddy current

• to gain higher current

Which one of the following a.c single phase motors is not an induction motor

• shaded pole

• series universal

• capacitor start

• split phase