WB JEE
Physics
Electronic Devices
Previous Years Questions

A Si and a Ge diode has identical physical dimensions. The band gap in Si is larger than that in Ge. An identical reverse bias is applied across the d...
The binary number 10111 is equivalent to the decimal number
A Zener diode having break down voltage Vz = 6V is used in a voltage regulator circuit as shown in the figure. The minimum current required to pass th...
The expression $$\overline A (A + B) + (B + AA)(A + \overline B )$$ simplifies to
What is the value of current through the diode in the circuit given?...
For the given logic circuit, the output Y for inputs (A = 0, B = 1) and (A = 0, B = 0) respectively are...
In the circuit shown, the value of $$\beta$$ of the transistor is 48. If the supplied base current is 200 $$\mu$$A, what is the voltage at the termi...
In the circuit shown, what will be the current through the 6V zener?...
Each of the two inputs A and B can assume values either 0 or 1. Then which of the following will be equal to $$\overline {A\,}$$ . $$\overline {B\,} ... In the circuit shown, inputs A and B are in states 1 and 0 respectively. What is the only possible stable state of the outputs X and Y?... What will be the current flowing through the 6k$$\Omega  resistor in the circuit shown, where the breakdown voltage of the Zener is 6V?...
In the given circuit, the binary inputs at A and B are both 1 in one case and both 0 in the next case. The respective outputs at Y in these two cases ...
When a semiconducting device is connected in series with a battery and a resistance, a current is found to flow in the circuit. If however, the polari...
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