Question

consider two npn transistors as shown in figure.if 0v corresponds to flase

Answer 1

Give with full sentences no short form

Answer 2

Complete question:

Consider two npn transistors as shown in figure. If 0 volts corresponds to false and 5 volts correspond to true then the output at C correspond to true then the output at C corresponds to:

A. A NAND B

B. A OR B

C. A AND B

D. A NOR B

Answer:

The output at C corresponds to A. A NAND B.

Step-by-Step Explanation:

The image given in the question is attached below.

• From question, we know that npn transistors are used. Here, the configuration is common emitter.
• In this configuration, the transistor gives 180° shift in the output when there is an input.
• So, when there is high input, the output is low and vice-versa.
• The two npn transistor given in the image are two NOT gate (because it given inverse output).
• When two NOT gate combines, they form NAND gate.