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FSC Part 2 Physics
Chapter 15 Test
Start Chapter 15 Test
FSC Part 2 Physics Chapter Wise Test
(English Medium)
MCQ's Test For Chapter 0 "Physics FSC Part 2 Chapter 15 Online MCQ's Test"
Try The MCQ's Test For Chapter 0 "Physics FSC Part 2 Chapter 15 Online MCQ's Test"
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Total Questions17
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Time Allowed20
Physics FSC Part 2 Chapter 15 Online MCQ's Test
00:00
Question # 1
When a conductor moves across a magnetic field an emf is set up this emf is called.
Question # 2
A step up transformer is used 120 V line to provide 240 V. If primary coil has 100 turns the number of turns is secondary is.
Question # 3
Energy density of an inductor is:
Question # 4
The motional emf is give by
Question # 5
The magnitude of back emf:
Question # 6
The winding of the electromagnet in motor are usually called.
Question # 7
A simple device that prevents the direction of current from changing is called.
Question # 8
The north pole of a magnet is brought near a metallic ring. The direction of induced current in the ring will be:
Question # 9
If we make magnetic field stronger the value of induced current is.
Question # 10
In D.C. generator, split rings act as.
Question # 11
In case of inductor , energy is stored in the
Question # 12
What is the co-efficient of mutual inductance, when the magnetic flux changes by 2 x 10-2 Wb, and change in current is 0.01 A?
Question # 13
When a motor is over loaded then the magnitude of back emf.
Question # 14
Electromagnetic induction obeys law of conservation
Question # 15
Electromagnetic induction is exactly according to law of:
Question # 16
Lenz's law is a consequence of the law of conservation of
Question # 17
Commutator was invented in
FSC Part 2 Physics Chapter 15 Online Test MCQ's
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| Sr.# | Question | Answer |
|---|---|---|
| 1 | If speed of rotation of a generator is doubled the output voltage will be. |
A. Remain same
B. Double
C. Four time
D. One half
|
| 2 | The device in the circuit that consume electrical energy are known as. |
A. Dissipaters
B. Generator
C. Load
D. Motors
|
| 3 | When back emf in motor is zero, it draws. |
A. Zero current
B. Minimum current
C. Maximum current
D. Steady current
|
| 4 | If magnetic field is doubled then magnetic energy density becomes. |
A. Four times
B. Two times
C. Three times
D. Six times
|
| 5 | When a coil is moved in a uniform magnetic field, an induced emf is produced due of change in |
A. Flux density
B. Electric flux
C. Magnetic flux
D. Magnetic field strength
|
| 6 | B2/2p is the expression of. |
A. Lenz's law
B. Magnetic energy
C. Magnetic energy density
D. Back emf
|
| 7 | The Lenz's law fulfils. |
A. Law of conservation of energy
B. Law of conservation of charge
C. Law of conservation of momentum
D. Kirchhoff's law
|
| 8 | Energy density of an inductor is: |
A. UM=1/2μ∘/B2
B. Um = 2μ∘/B
C. UM = 1/2B2/μ∘
D. Um = 2B2/μ∘
|
| 9 | When a motor is over loaded then the magnitude of back emf. |
A. Increases
B. Decreases
C. Remain constant
D. Zero
|
| 10 | Step up transformer is used. |
A. Step up D.C. voltage
B. Step up A.C. voltage
C. Step up both A.C and D.C.
D. Step up A.C. current
|
Test Questions
