Air standard Otto cycle is more efficient than the diesel cycle for the same
Heat addition & compression ratio
Heat addition & pressure
Compression ratio & pressure
Cylinder dimension & rpm
- If Reynolds number is greater than 1, then the
- Solute atoms which cause yield point phenomenon in mild steel are/is
- What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer…
- Electrostatic separation of minerals from each other is based on their differences in the following…
- Chromium molybdenum steel cannot be welded using __________ welding.
- Often earing defects are found during deep drawing operation, because the
- Addition of __________ to steel does not help in improving its machinability.
- Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when…
- Which of the following represents the correct time-temperature curve when a block of metal is heated…
- Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is
- While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________…
- Identify the correct statement.
- Lead is poured into the joint between two- __________ pipes.
- Which of the following metals is not subjected to electrolytic refining/purification?
- The escape velocity of a body on earth which is independent of its mass is about __________ km/second.
- The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________…
- __________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it…
- A steam pipe is intended to be insulated with two layers of insulating materials of different thermal…
- __________ is the most important element, which controls the physical properties of steel.
- Projection welding & stud welding is categorised as the __________ welding.
- The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used.…
- The atmospheric temperature during melting of ice/snow (in the atmosphere)
- The co-ordination number in simple cubic structure is
- Neutrons are present in all atoms except that of
- Fibre glass is a composite material of
- The approximate height of a blast furnace having a useful volume of 2000 m3 is about __________ metres
- The leaching solvent used in Baeyer's process for the purification of bauxite is
- Absolute zero pressure can be attained at a temperature of
- The product (s) of roasting of a sulphide ore is (are)
- Hardening of steel is not possible, unless it is heated __________ critical point.