EASY
12th Gujarat Board
IMPORTANT
Earn 100

Draw the logic symbol and give the truth table of the NAND gate. Why this gate is called a universal gate?

Important Questions on Semiconductor Electronics: Materials, Devices and Simple Circuits

MEDIUM
12th Gujarat Board
IMPORTANT
In a N-P-N transistor about 1010 electrons enter the emitter in 1 μs when it is connected to a battery. About 2% electrons recombine with the holes in the base. Calculate the value of IE, IB, αdc, and βdc (e=1.6×10-19 C)
MEDIUM
12th Gujarat Board
IMPORTANT

Explain the use of the Zener diode as a voltage regulator.

HARD
12th Gujarat Board
IMPORTANT
For N-P-N transistor about 10% of the electron entering the base from the emitter recombines with the hole. This result in the collector current being 18.0 mA. Calculate the emitter current and the current gain.