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Free tnpsc model questions Online Test - MeritNotes
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Online Exam
No. of Questions :10
Remaining Time :
1. In an induction furnace, high temperature is produced by
(a)
the burning of the fuel
(b)
using transformer
(c)
generating eddy currents
(d)
none of these
2. The alternating emf induced in the coil varies
(a)
periodically in both magnitude and direction
(b)
randomly in both magnitude and direction
(c)
periodically in direction only
(d)
periodically in magnitude only
3. Which of the following components is not used in AC generator?
(a)
Armature
(b)
Brushes
(c)
Slip rings
(d)
Split rings
4. An AC generator converts _____ into electrical energy.
(a)
magnetic energy
(b)
mechanical energy
(c)
sound energy
(d)
vibrational energy
5. The part of the AC generator that passes the current from the coil to the external circuit is
(a)
slip rings
(b)
split rings
(c)
brushes
(d)
field magnet
6. The device used for controlling current in an AC circuit is
(a)
Choke coil
(b)
Transformer
(c)
Starter
(d)
Slip ring
7. Who discovered the production of induced emf by the effect of magnetic field?
(a)
Fleming
(b)
Michael Faraday
(c)
Christian Oersted
(d)
Christian Huygens
8. Transformer works on
(a)
AC more effectively than DC
(b)
AC only
(c)
DC only
(d)
Both AC and DC
9. Fleming's right hand rule is otherwise called
(a)
Electromagnetic law
(b)
Generator rule
(c)
Lenz's law
(d)
Transformer rule
10. The power loss is less in transmission lines when
(a)
voltage is less but current is more
(b)
voltage is more but current is less
(c)
both voltage and current are more
(d)
voltage is less but current is more
