IES2008

Problem-0103: Electrical Circuits, signal and systems objective question

Tapan DeyThu, 27/01/2011 - 11:40pm

For the circuit shown, what is the voltage V if the source voltage is reduced by 50%?

Problem-0111: Electrical Materials objective question

Tapan DeyThu, 27/01/2011 - 9:13pm

Match List-I with List-II and select the correct answer using the code given below the lists:

Problem-0120: Electrical Materials objective question

Tapan DeyThu, 27/01/2011 - 9:07pm

Which one of the following is the correct statement?
During the process of magnetization of ferromagnetic material, the magnetic domains

a. Only expand
b. Rotate first and then expand
c. Expand first and then rotate
d. Neither rotate nor expand

Problem-0118: Electrical Materials objective question

Tapan DeyThu, 27/01/2011 - 9:05pm

Consider the following statements about p-n junctions:
1. p-n junction behaves as a capacitor when forward biased.
2. p-n junction has p and n type semiconductors with depletion layer in between.

Problem-0117: Electrical Materials objective question

Tapan DeyThu, 27/01/2011 - 9:00pm

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-0116: Electrical Materials objective question

Tapan DeyThu, 27/01/2011 - 8:58pm

Consider the following statements about semiconductors?
1. The forbidden energy gap in semiconductors lies between the valence band and conduction band.
2. The forbidden energy gap in germanium at 0 K is about 0.72 eV.