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1. A copper ring is suspended by a thread in a vertical plane. If one end of a magnet is brought horizontally towards the ring as shown, the ring will (NTSE Panchkula, Chandigarh, Stage-I, 2012-13)
Move towards the magnet
No changes in its position
Move away from the magnet
First move towards and then move away from the magnet
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2. What is meant by one cycle of a.c.? (NTSE Panchkula, Chandigarh, Stage-I, 2012-13)
Going from zero to + maximum
Going from + maximum to zero
Going from zero to - maximum and - maximum to zero
All the three mentioned above combined together in same order
3. Match the terms in Column-I with those of Column-II.
a(iii), b(ii), c(i), d(iv)
a(ii), b(i), c(iii), d(iv)
a(iv), b(iii), c(ii), d(i)
a(iv), b(ii), c(iii), d(i)
4. According to Fleming's left hand rule, the _______ points in the direction of the magnetic field (NTSE Mizoram, Stage-I, 2012-13)
Thumb
Forefinger
Second finger
Middle finger
5. A device which converts the electrical energy into the mechanical energy is called (NTSE Mizoram, Stage-I, 2012-13)
Dynamo
Electromagnet
Electric motor
Generator
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