• Engineering Physics

    Viva Questions on Dielectrics

    Viva Questions on Dielectrics Viva Questions on Dielectrics, Dielectrics Viva Questions, Engineering Physics Viva Questions, Viva Questions on Polarization, Questions with Answers Q.1. what are dielectrics? Ans. Dielectrics are the materials used for charge storage, by polarisation of the molecules. They are also called active dielectrics. The dielectric material increases the capacitance or charge storage ability of a capacitor. Q.2. Mention a few properties of dielectric materials. Ans. The properties of dielectrics materials are – They are non-metallic materials. They have high specific resistance. They have a negative temperature co-efficient of resistance. Q.3. Mention the types of polarisation mechanisms in a dielectric material. Ans. There are four different types of…

  • Analog & Digital Communication

    Electronic Communication Viva Questions

    Electronic Communication Viva Questions Electronic Communication Viva Questions, Viva Questions on Electronic Communication, Analog Communication Viva Questions, Digital Communication, Viva Questions, Engineering Viva Questions, Modulation Viva Questions, Demodulation Viva Questions, Electronic Communication Viva Questions, Viva Questions on Electronic Communication, Short Questions on Electronic Communication, Electronic Communication Viva Questions Short Type Questions with Answers Q.1. What is the basic purpose of an electronic communication system? Ans. The basic purpose of an electronic communication system is to transmit information signals (baseband signals) through a communication channel. Q.2. What is meant by baseband signal? Give an example. Ans. The term baseband is used to designate the band of frequencies representing the original signal…

  • Wireless Communications

    Evolution of Wireless Communication Systems

    Evolution of Wireless Communication Systems Evolution of Wireless Communication Systems, Evolution of Wireless Communication Systems Viva Questions, Short Questions on Evolution of Wireless Communication Systems, Wireless Communications Viva Questions, Short-Answer Type Questions with Answers Q.1. List and describe the three types of data flow in wireless communication. Ans. Simplex – When data moves from the transmitter to the receiver only. The receiver cannot reply. Half-duplex – When data can move in both directions but not simultaneously. When one is transmitting, the other must listen until the transmission is finished. Full-duplex – Data can move in both directions simultaneously. Q.2. Discuss the advantages and disadvantages of standards. Ans. Standards ensure that…

  • Digital Circuit Systems

    Shift Registers Viva Questions

    Shift Registers Viva Questions Shift Registers Viva Questions, Viva Questions on Shift Registers, Registers Viva Questions Digital Electronics Viva Questions, Engineering Viva Questions, Shift Registers Viva Questions Flip-Flop Viva Questions Short Questions and Answers   Q.1. What do you mean by serial data? Ans. Multi-bit data is said to be in serial form when the data bits appear sequentially (one after the another in time) at a single terminal. Q.2. What do you mean by parallel data? Ans. Multi-bit data is said to be in parallel form when all the bits are available (accessible) simultaneously. Q.3. What do you mean by serial data transfer? Ans. serial data transfer is the…

  • Digital Signal Processing

    Discrete Convolution and Correlation Viva Questions

    Discrete Convolution and Correlation Viva Questions Discrete Convolution and Correlation Viva Questions, Viva Questions on Discrete Convolution and Correlation, Digital Signal Processing Viva Questions, Discrete Convolution Viva Questions, Discrete Correlation Viva Questions, Engineering Viva Questions, Discrete-Time Signals and Systems Viva Questions Short Questions with Answer Q.1. What is discrete convolution? Ans. The convolution of discrete-time signals is called discrete convolution. Discrete-time convolution is a method of finding the zero-state response of relaxed linear time-invariant systems. Q.2. Write the expression for discrete convolution. Ans. The expression for discrete convolution y(n) of two discrete-time signals x(n) and h(n) is: or Q.3. If y(n) = x(n) * h(n), how are the parameters of…

  • Digital Signal Processing

    Discrete-Time Signals and Systems Viva Questions

    Discrete-Time Signals and Systems Viva Questions Discrete-Time Signals and Systems Viva Questions, Digital Signal Processing Viva Questions, DSP Viva Questions, Discrete-Time Signals Viva Questions, Discrete-Time Systems Viva Questions, Engineering Viva Questions, Discrete-Time Signals and Systems Viva Questions Short Questions with Answer Q.1. Define a signal. Ans. A signal is defined as a single-valued function of one or more independent variables which contain some information. Q.2. What is the one-dimensional signal? Ans. A signal which depends on only one independent variable is called a one-dimensional signal. Q.3. What is signal modeling? Ans. The representation of a signal by the mathematical expression is known as signal modeling. Q.4. What are the different…

  • Digital Circuit Systems

    Flip-Flop Viva Questions

    Flip-Flop Viva Questions Flip-Flop Viva Questions, Viva Questions on Flip-Flop, Short Questions on Flip-Flop, Digital Electronics Viva Questions, Engineering Viva Questions, Combinational Circuit Viva Questions, JK Flip-Flop Viva Questions, SR Flip-Flop Viva Questions, Latch Viva Questions, Master-Slave Flip-Flop Viva Questions, Clocked Flip-Flop Viva Questions Logic Gates Viva Questions Shift Registers Viva Questions Short Questions and Answers Q.1. Distinguish between combinational and sequential switching circuits. Ans. Basically, switching circuits may be combinational switching circuits or sequential switching circuits. Combinational switching circuits are those whose output levels at any instant of time are dependent only on the levels present at the inputs at that time. Any prior input level conditions have no…

  • Material Science Engineering

    Mechanical Properties of Materials Viva Questions

    Mechanical Properties of Materials Viva Questions Mechanical Properties of Materials Viva Questions, Viva Questions on Mechanical Properties of Materials, Material Science Engineering Viva Questions, Short Question answer on Mechanical Properties of Materials, Engineering Viva Questions, Mechanical Properties of Materials Viva Questions, Mechanical Properties of Materials Viva Questions, Interview question on Mechanical Properties of Materials Crystal Structure of Materials Viva Questions Questions with Answer Q.1. Explain the importance of mechanical properties in the design. Ans. Mechanical properties are the most important requirements of materials from the engineering point of view in selecting them for design purposes. Mechanical properties of materials describe their behavior under mechanical usage. A designer must have considerable…

  • Material Science Engineering

    Crystal Structure of Materials Viva Questions

    Crystal Structure of Materials Viva Questions Crystal Structure of Materials Viva Questions, Viva Questions on Crystal Structure of Materials, Material Science Viva Questions, Engineering Viva Questions, Short Question with answer on Crystal Structure of Material, Crystal Structure of Materials Viva Questions, Crystal Structure of Materials Viva Questions, Crystal Structure of Materials Viva Questions Material Science Engineering Viva Questions Mechanical Properties of Materials Viva Questions Short Questions with Answer Q.1. What are the Structures of Atoms? Ans. According to the modern concept, an atom is composed of the nucleus which is surrounded by electrons. The diameter of the nucleus is 10-10 m. The nucleus is further composed of neutrons and protons.…

  • Engineering Chemistry

    Corrosion Science Viva Questions

    Corrosion Science Viva Questions Corrosion Science Viva Questions, Viva Questions on Corrosion Science, Science of Corrosion Viva Questions, Engineering Chemistry Viva Questions, Engineering Viva Questions Water Treatment Viva Questions Short Answer Questions Q.1. Define corrosion. Ans. Any process of deterioration and consequent loss of solid metallic materials through an unwanted chemical or electrochemical attack by its environment is called corrosion. Q.2. What is meant by rusting of iron? Ans. The attack of atmospheric gases on iron or steel, formation of a layer of the reddish scale of hydrated ferric oxide fe2O3 · 3H2O on its surface is known as rusting of iron. Q.3. What is dry corrosion? Ans. Dry corrosion…