Top Electrical Engg MCQ - 500+ MCQ
281
What will happen to the permeance of the magnetic circuit, if the area of the cross section of the circuit gets doubled?
282
Which one of the following is the CORRECT value of magnetic permeability in free space?
283
The form factor of a purely sinusoidal alternating wave is:
284
Transformers operating in parallel will share the load depends upon
285
If number of poles in the rotor decrease the speed of the rotor will
286
What will be the value of capacitance (in micro-Farad) of a capacitor when the potential difference between the terminals of the capacitor is 40 V and the charge stored in the capacitor is 8 mC?
287
Which of the following is tetravalent?
288
The semiconductor diode can be used for
289
What is the equivalent capacitance of two 10 µF capacitors connected in series?
290
Determine the value of load impedance (in ohms) for transmitting maximum power from the source to the load, when the source impedance of the circuit is 6 + j5 ohms.
291
Maximum efficiency will occur, when copper loss and iron loss are
292
Determine the value of permeance (in H) of a coil, when the flux through the coil is 26 Wb and the value of produced mmf is 20 Amp-turns.
293
What will be the magnetic field intensity (in Amp-turns/m) of a 4 meter long coil, when the coil has 220 turns and carrying a current of 0.4 A?
294
The phenomenon of crawling in a 3-phase induction motor is primarily due to:
295
Determine the energy (in J) stored by an 8 H inductor, if the current through the inductor is 4 A.
296
Moving iron instruments can be used to measure:
297
Determine the transient time (in seconds) of a series RC circuit, when the capacitance of the circuit is 4 mF and the resistance of the circuit is 6 kilo-Ohms.
298
What type of EMF is induced in AC or DC generator?
299
Principles are use in street lighting is
300
Which one of the following theorem is the converse of Thevenin's theorem?