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Q1. | Mutually inductance between two magnetically-coupled coils depends on |

A. | permeability of the core [Wrong Answer] |

B. | the number of their turns [Wrong Answer] |

C. | cross-sectional area of their common core [Wrong Answer] |

D. | all of the above [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ Which of the following inductor will have the least eddy current losses?

Air core

Laminated iron core

Iron core

Powdered iron core

⇒ Ifcurrentin a conductor increases then according to Lenz's law self-induced voltage will

aid the increasing current

tend to decrease the amount of current

produce current opposite to the increasing current

aid tite applied voltage

⇒ Which of the following is not a unit of inductance?

Henry

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All of the above

⇒ A coil with negligible resistance has 50 V across it with 10 mA. The inductive reactance is

50 ohms

500 ohms

1000 ohms

5000 ohms

⇒ Two 300 µH coils in series without mutual coupling have a total inductance of

300 µH

600 µH

150 µH

75 µH

⇒ Lenz's law is a consecluence of the law of conservation of

induced current

charge

enery

induced e.m.f.

⇒ In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will

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decrease

remain the same

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⇒ Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla.

100 N

400 N

600 N

1000 N

⇒ Which of the following statements is cotrect ?

The inductance of the coil carrying a constant D.C. current will change the current into pulses

The inductance of the coil carrying a constant D.C. current will increase the current

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⇒ Which of the following circuit element stores energy in the electromagnetic field?

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32 mH

38 mH

40 mH

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⇒ Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be

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8 H

12 H

24 H

⇒ Which of the following circuit elements will oppose the change in circuit current?

Capacitance

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⇒ The magnitude of the induced e.m.f. in a conductor depends on the

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amount of flux cut

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rate of change of flux-linkages

⇒ A conductor 2 metres long moves at right angles to a magnetic field of flux densit 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be

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⇒ An averaVoltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is

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the number of their turns

cross-sectional area of their common core

all of the above

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Newton

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the laminations are stacked vertically

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NI

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NΦ/I

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⇒ For a purely inductive circuit which of the following is true ?

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Relative power is zero

Actual power of the circuit is zero

Any capacitance even if present in the circuit will not be charged

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variation in voltage to the coil

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the resistance of magnetic path

⇒ An open coil has

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