Thermal efficiency of an internal combustion engine is around __________ percent. 35 80 8 65 TRUE ANSWER : ? YOUR ANSWER : ?
What is the value of included angle of a triangular notch for maximum discharge ? 30° 60° 120° 90° TRUE ANSWER : ? YOUR ANSWER : ?
The total frictional resistance to fluid flow does not depend upon the Fluid pressure Roughness of the surface Fluid density Fluid velocity TRUE ANSWER : ? YOUR ANSWER : ?
On increasing the yield strength of a steel from 450 to 650 MPa, its __________ will increase. Ultimate tensile strength (UTS) Percent elongation Modulus of resilience Modulus of toughness TRUE ANSWER : ? YOUR ANSWER : ?
__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently. Collar Expansion Bell and Spigot Flanged TRUE ANSWER : ? YOUR ANSWER : ?
Coke is added in the blast furnace to Remove sulphur & phosphorus from molten metal Increase the fluidity of slag None of these Reduce & melt the iron ore TRUE ANSWER : ? YOUR ANSWER : ?
Lead is poured into the joints between two __________ pipes. Cast iron Concrete Plastic Steel TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of thermal & electrical conductivity is same for all the metals at the same temperature ; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) T² 1/T T 1/T² TRUE ANSWER : ? YOUR ANSWER : ?
In the Bayer's process, bauxite is digested under pressure using HCl H₂SO₄ NaOH NH₃ TRUE ANSWER : ? YOUR ANSWER : ?
Surface tension is due to the __________ forces. Viscous Difference between adhesive & cohesive Adhesive Cohesive TRUE ANSWER : ? YOUR ANSWER : ?