Subject Repository
Mechanical Engineering Mcqs
Showing 61 – 80 of 2,137 verified multiple choice questions with answers and explanations.
Q61NTS / FPSC / PPSC
Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler _________________?
Q62NTS / FPSC / PPSC
During storage, the heating value of coal __________________?
Q64NTS / FPSC / PPSC
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has ____________________?
Q65NTS / FPSC / PPSC
The size of a boiler drum in pulverised fuel fired boiler,as its size and capacity, (steam pressure and flow ratings) increase __________________?
Q66NTS / FPSC / PPSC
The basic job of feed water treatment in boilers is to overcome the problem of __________________?
Q67NTS / FPSC / PPSC
The feed check valve is used in order to ______________________?
Q68NTS / FPSC / PPSC
In water wall furnace, the heat is transferred to the water-walls by _________________?
Q69NTS / FPSC / PPSC
Fire tube boilers are limited to a maximum design working pressure of ____________________?
Q70NTS / FPSC / PPSC
The relative heat absorption for successively added equal areas of boiler convection heating surfaces____________________?
Q71NTS / FPSC / PPSC
The steam temperature with increase in load in case of a boiler fitted with radiation super heater________________?
Q72NTS / FPSC / PPSC
A supercritical boiler is one that operates above the pressure and temperature of following values_____________________?
Q73NTS / FPSC / PPSC
Maximum energy loss in a boiler occurs due to _______________________?
Q74NTS / FPSC / PPSC
The balanced draft furnace is one using _________________________?
Q75NTS / FPSC / PPSC
Evaporative capacity of boiler is expressed as____________________?
Q77NTS / FPSC / PPSC
Incomplete combustion can be best judged by__________________?
Q79NTS / FPSC / PPSC