1.Why gas containers are mostly in a cylindrical shape? The ideal shape would be a sphere. The container must have the capacity to withstand the extremely high pressure of liquefied gas. A spherical shape helps in distributing these forces uniformly. 2.Explain why re-heater is used in gas turbine The advantage of reheater is that it…
1.Explain what is torque Torque is the force that causes rotation. It is a measure of how much force is acting on an object making it rotate. 2.What is the difference between torque and power? While power determines the speed of a vehicle, torque determines the time in which that speed can be reached. The…
1.What is a process flow diagram? A Process Flow Diagram is a user friendly, simplified sketch which illustrates general plant streams, major equipments and key central loops and shows the relationship between major components in the system. By using symbols to identify instruments and vessels it describes the primary flow course. They also provide e…
1. What kind of materials should be used for shafts manufacturing? Some of the qualities that should be present in materials for shafts are as follows: > The material should have a high index of strength. > Also it should have a high level of machinability. > The material should possess a low notch sensitivity…
1. In order to derive the torsional formulas what are the assumptions taken? The torsion equation is derived on the basis of following assumptions: > The shaft material is uniform, throughout the shaft. > Even after loading the shaft circular remains circular. > After the application of torques the plain section of a shaft remains…
1.What are the factors that can affect the Factor of safety selection? The factor of safety is used in designing a machine component. Prior to selecting the correct factor of safety certain points must be taken into consideration such as: > The properties of the material used for the machine and the changes in its…
1. Which reactor produces more fissionable material than it consumes ? Ans: Breeder reactor. 2. Which reactor uses natural uranium as fuel ? Ans: Gas cooled reacator. 3. Which reactor uses heavy water as moderator ? Ans: CANDU. 4. Which reactor requires no moderator ? Ans: Breeder reactor. 5. Which reactor uses primary coolant as fluoride salts of lithium, beryllium, thorium and uranium ?…
1. How the analyses and calorific values of fuels can be reported ? Ans: It may be reported as (a) as received or fired (wet) basis (b ) dry or moisture free basis © combustible or ash and moisture free basis 2. What is the difference between nuclear fission and fission chain reaction. Ans: The process of splitting of…
1. Which reactor has no moderator ? Ans: Fast breeder reactor. 2. What are thermal neutrons ? Ans: Thermal neutrons are slow neutrons (having energy below 1 eV) which are in thermal equilibrium with their surroundings. 3. What is big advantage of fast breeder reactor ? Ans: It has rapid self breeding of fissile fuel during the operation of the reactor,…
1. How you can define coal ? Ans: Coal is a naturally occurring hydrocarbon that consists of the fossilised remains of buried plant debris that have undergone progressive physical and chemical alteration, called coalification, in the course of geologic time. 2. Which pollutant is major greenhouse gas and what is its effect ? Ans: CO is major greenhouse gas…