The phenomenon due to which there is an induced current in one coil due to the current in a neighbouring coil is?
Answer: Mutual inductance
If the current in one coil becomes steady, the current in neighbouring coil is?
If the flux linkage in coil 1 is 3Wb and it has 500 turns and the current in coil 2 is 2A, calculate the mutual inductance.
Practical application of mutual inductance is ____________
The capacitor doesn’t allow sudden changes in ___________
If a capacitor of capacitance 9.2F has a voltage of 22.5V across it. Calculate the energy of the capacitor.
Electricity may be generated by a wire:
Answer: passing through a flux field
In the given circuit, what will the voltage be across R3 25 s after the switch is moved to position 2?
A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage ?
An average voltage 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
The co-efficient of coupling between two air core coils depends on
Answer: mutual inductance and self inductance of two coils
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.
A conductor carries 125 amperes of current under 60° to a magnetic field of 1.1 tesla. The force on the conductor will be
Which of the following circuit elements will oppose the change in circuit current ?
For a purely inductive circuit which of the following is true ?
Answer: Actual power of the circuit is zero
Which of the following is not a unit of inductance ?
Answer: Coulomb/volt ampere
The law that the induced e.m.f. and current always oppose the cause producing them is due to
A laminated iron core has reduced eddy-current losses because
Answer: the laminations are insulated from each other
Mutually inductance between two magnetically-coupled coils depends on
The magnitude of the induced e.m.f. in a conductor depends on the
Answer: rate of change of flux-linkages