Basic Electronics — Winter 2022

Objective Question (MCQ) Mark

Choose an appropriate option from the following 1. The linearity of the circuit network is determined by which theorem

KVL (b) KCL (c) Maximum power transfer (d) Super position 2. The conductance is inverse of which parameter

Inductance (b) Resistance (c) Capacitance (d) Reluctance 3. The resistance R1 = 6Ω and R2 = 12Ω connected in parallel than total resistance will be

18Ω (b) 72Ω (c) 2.5Ω (d) 0.25Ω 4. Source resistance of Ideal voltage source is

Infinite (b) Zero (c) 100Ω (d) 100kΩ 5. To increase current capacity of a cell several cells should be connected in

Series (b) Parallel (c) ammeter (d) voltmeter 6. How many minimum NAND gate required to make AND gate

4 (b) 2 (c) 3 (d) 7. An open loop gain of an ideal operational amplifier is

0 (b) α (c) 200000 (d)

Choose an appropriate option from the following 1. The Digital Circuit which accepts one input and produces many output is known as

Encoder (d) De-multiplexer (c) Multiplexer (d) Decoder 2. In computer CPU stands for

Central Power Unit (b) Central Processing Unit (c) Cheap Processing Unit (d) Common Power Unit 3. For automatic control the system should be

Open loop (b) Closed loop 4. In signal processing system AM means

Audio Mode, (b) Amplitude Modulation (c) Average Modulation (d) Audio Meter 5. An operational amplifier IC 741 has total number of input pins

3 (b) 5 (c) 2 (d) 6. For decimal number 11 the BCD is

0011 (b) 1100 (c) 10001000 (d) 7. An amplifier is used to increase

frequency (b) signal level (c) phase (d) noise

Define conductor, semi-conductor and insulator.

Explain ideal current source and ideal voltage source with circuit symbol and i- v curves.

Explain resistance strain gauge with basic diagram.

Explain in brief Thevenin equivalent circuit.

Explain star-delta transformation with equation and diagram.

Find the current in each resistor by nodal analysis for circuit of Figure

Draw and explain close loop inverting amplifier with OPAMP

Define (i) CMRR (ii) Input bias current (iii) PSRR (iv) Slew rate.

Explain application of OPAMP as an integrator and differentiator.

Draw the AND, OR, NOT gate using NOR gate.

What is modem? Explain in brief various types of modems.

Explain 3 to 8 decoder with block diagram, truth table and logic diagram.

Discuss in brief basic elements of digital communication system.

Write short note on interference.

Explain in detail various multiplexing systems used in communication.

Give classification of feedback control system.

Explain various types of transmission medium used in communication.

Explain various analog communication system with application.