Problem-0117: Electrical Materials objective question

Which one of the following is the correct statement?

When a p-n junction is reverse-biased,then
a. Holes and electrons move away from the junction
b. Depletion region decreases
c. Barrier breaks down
d. Minority carriers are not affected

Problem-0130: Electrical Circuits, signal and systems Conventional question

When can a two-port circuit shows in Fig. 4 reciprocal? Justify the answer by a 15V voltage source. [Marks-12]

Problem-0129: Electrical Circuits, signal and systems Conventional question

Three identical coils are connected in star to a 200V, 3-phase supply and each takes 400W. The p.f is 0.8 lagging. What will be the magnitude of line currents and total power if the same coils are connected in delta to the same supply?

Problem-0128: Electrical Circuits, signal and systems Conventional question

Compute the steady-state current in the [tex]8\Omega[/tex] resistor in the circuit given in Fig.3. [Marks-12]

Problem-0127: Electrical Circuits, signal and systems Conventional question

A sinusoidal voltage [tex]e(t) = 141\sin 314t[/tex] is applied to an initially de-energised series R-L circuit in which [tex]R = 100\Omega[/tex] and L=0.5H.

Problem-0126: Electrical Circuits, signal and systems Conventional question

The following mesh equations pertain to a network: