Correct answer
C. Needle valve
Explanation
The correct answer is Needle valve.
Carbon black is pulverised in a________?
Refractory bricks having high thermal conductivity is desirable, when it is to be used in the ________?
Multistage catalytic converter is not used in the________?
Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its________?
Segar cones are used for the determination of ________ of refractories?
A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect?