Fluids Viva Questions Fluids Viva Questions, Viva Questions on Fluids, Short Questions, and Answers on Fluids, Engineering Viva Questions, Basic Mechanical Engineering Viva Questions, Short Questions and Answers Q.1. When a fluid is said to be Newtonian? Ans. When the shear stress is directly proportional to the velocity gradient. Q.2. What are Newtonian fluids? Ans. Fluids which follow the relation: absolute viscosity Where = shear stress and = gradient of velocity with distance between fixed plate and moving plate (at velocity V). Q.3. Explain differences among fluid pressure, gauge pressure, the difference in pressure, bar pressure, and pressure head. Ans. Fluid pressure is transmitted with equal intensity in all directions…

Reciprocating Machines Viva Questions Reciprocating Machines Viva Questions, Viva Questions on Reciprocating Machines, Short Answer Questions on Reciprocating Machines, Engineering Viva Questions, Basic Mechanical Engineering Viva Questions, Reciprocating Machines Viva Questions, Reciprocating Machines Viva Questions Multiple Choice Questions Q.1. Define Bore. Ans. The inside diameter of the cylinder is known as the bore. Q.2. What do you mean by swept volume? Ans. The volume between the TDC and BDC is known as swept volume. Q.3. What is Engine Speed? Ans. This is measured in terms of revolutions of crankshaft per minute. It is represented by rpm (revolution per minute). Q.4. Define Dead Centres. Ans. The extreme position of the piston…

Thermodynamics Viva Questions Thermodynamics Viva Questions, Viva Queistions on Thermodynamics, Engineering Viva Questions, Short answer type questions on Thermodynamics, Thermodynamics Viva Questions Short answer type Questions Q.1. What do you understand by latent heat? Give four examples of latent heats. Ans. For pure substance, the heat effects accompanying change in state at constant pressure (no temperature change being evident) are known as latent heats. Examples of latent heats are: heat of fusion, vaporization, sublimation, and change in crystal form. Q.2. What is polytropic process? Under what conditions it approaches isobaric, isothermal and isometric process? In which reversible process no work is done? Ans. A polytropic process is one that follows…