Semiconductor Electronics

The given circuit works as : [figure]

1. NOR gate
2. OR gate
3. AND gate
4. NAND gate

The charge stored by the capacitor C in the given circuit in the steady state is . [figure]

1. 7.5
2. 5
3. 10
4. 12.5

The output voltage in the following circuit is (Consider ideal diode case) [figure]

1. 0 V
2. +5 V
3. −5 V
4. 10 V

In the following circuit, the reading of the ammeter will be (Take Zener breakdown voltage = 4 V) [figure]

1. 60 mA
2. 80 mA
3. 10 mA
4. 24 mA

Consider the following logic circuit. [figure] The output is Y = 0 when :

1. A = 1 and B = 0
2. A = 0 and B = 0
3. A = 1 and B = 1
4. A = 0 and B = 1

The Boolean expression Y = A BC + A C can be realised with which of the following gate configurations. Choose the correct answer from the options given below:

1. B, C Only
2. A, B, C Only
3. A, B Only
4. A, C Only

Consider an n-type semiconductor in which ne and nh are number of electrons and holes, respectively. Choose the correct answer from the options given below :

1. (A), (B), (E) only
2. (A), (C), (E) only
3. (A), (B), (C) only
4. (A), (C), (D) only

Choose the correct logic circuit for the given truth table having inputs A and B. [figure]

1. [figure]
2. [figure]
3. [figure]
4. [figure]

The truth table corresponding to the circuit given below is: [figure]

1. arrayccc A & B & C \ 0 & 0 & 0 \ 0 & 1 & 0 \ 1 & 0 & 1 \ 1 & 1 & 1 array
2. arrayccc A & B & C \ 0 & 0 & 1 \ 1 & 0 & 0 \ 0 & 1 & 0 \ 1 & 1 & 0 array
3. arrayccc A & B & C \ 0 & 0 & 1 \ 0 & 1 & 0 \ 1 & 0 & 0 \ 1 & 1 & 0 array
4. arrayccc A & B & C \ 0 & 0 & 0 \ 1 & 0 & 0 \ 0 & 1 & 0 \ 1 & 1 & 1 array

A zener diode with 5 V zener voltage is used to regulate an unregulated dc voltage input of 25 V. For a 400 resistor connected in series, the zener current is found to be 4 times load current. The load current (IL) and load resistance (RL) are :

1. IL = 0.02 mA; RL = 250
2. IL = 10 A; RL = 0.5
3. IL = 10 mA; RL = 500
4. IL = 20 mA; RL = 250