Semiconductor Electronics

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

In the digital circuit shown in the figure, for the given inputs the P and Q values are : [figure]

1. P = 0, Q = 1
2. P = 1, Q = 0
3. P = 0, Q = 0
4. P = 1, Q = 1

[figure] For the circuit shown above, equivalent GATE is :

1. NOT gate
2. NAND gate
3. AND gate
4. OR gate

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

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

Which of the following circuits has the same output as that of the given circuit? [figure]

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

[figure] In the circuit shown here, assuming threshold voltage of diode is negligibly small, then voltage VAB is correctly represented by:

1. [figure]
2. [figure]
3. VAB would be zero at all times.
4. [figure]

Consider the following statements : Choose the correct answer from the options given below :

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

The output of the circuit is low (zero) for : [figure] Choose the correct answer from the options given below :

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

What is the current through the battery in the circuit shown below? [figure]

1. 1.5 A
2. 0.25 A
3. 1.0 A
4. 0.5 A