Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the Diameter of the pipe Length of the pipe Velocity of the fluid Density of the fluid TRUE ANSWER : ? YOUR ANSWER : ?
Ignition of fuel in a diesel engine is by None of these Hot compressed air Fuel injection Spark TRUE ANSWER : ? YOUR ANSWER : ?
In radiative heat transfer, a grey surface is the one, which has Equal brightness in all directions Grey appearance to the eye Zero reflectivity Emissivity independent of wavelength TRUE ANSWER : ? YOUR ANSWER : ?
Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of 0.042361111111111 0.084027777777778 0.044444444444444 0.043055555555556 TRUE ANSWER : ? YOUR ANSWER : ?
Frost formation on the evaporator tubes in the domestic refrigerators Can be prevented by proper design Causes heat loss due to poor heat transfer Decreased compressor power Is immaterial TRUE ANSWER : ? YOUR ANSWER : ?
When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively Decreases & decreases Increases & decreases Increases & increases Decreases & increases TRUE ANSWER : ? YOUR ANSWER : ?
A polymer is termed as an 'elastomer', if its percentage elongation is more than 100%. An elastomer is termed as 'rubber' if its percentage elongation is more than __________ percent. 150 200 400 300 TRUE ANSWER : ? YOUR ANSWER : ?
Tempering of a material does not improve its Softness Toughness Machinability Internal stress level TRUE ANSWER : ? YOUR ANSWER : ?
Deformation band is absent in materials having __________ lattice crystal structure. Hcp None of these Bcc Fcc TRUE ANSWER : ? YOUR ANSWER : ?
__________ is the most suitable lubricant for drawing mild steel wires? Lime water Water Kerosene Sodium stearate TRUE ANSWER : ? YOUR ANSWER : ?