doubled
halved
quadrupled
unchanged
✅ The correct answer is option A.
Mechanical Engineering MCQs
The maximum mechanical advantage of a lifting machine is
1 + m
1 – m
1 / m
m
✅ The correct answer is option C.
In a multiple V-belt drive, if one of the belts break, then
only the broken belt is replaced
the entire set of belts is replaced
the broken belt and the belt on either side of it, is replaced
the broken belt need n
✅ The correct answer is option B.
A nozzle is said to be a convergent-divergent nozzle, when the cross-section of a nozzle first decreases from its entrance to throat and then increases from its throat to exit.
TRUE
FALSE
✅ The correct answer is option A.
Select the wrong statement
A Joule cycle consists of two constant volume and two isentropic processes.
An Otto cycle consists of two constant volume and two isentropic processes.
An Ericsson cycle consists of two constant pressure and two isothermal processes.
all of the above
✅ The correct answer is option A.
An oxidising flame is obtained when equal volumes of oxygen and acetylene are supplied.
TRUE
FALSE
✅ The correct answer is option B.
The length of Lancashire boiler varies from
5 to 6 m
6 to 7 m
7.25 to 9 m
9 to 10 m
✅ The correct answer is option C.
Normalising of steel is done to
refine the grain structure
remove strains caused by cold working
remove dislocations caused in the internal structuure due to hot working
all of the above
✅ The correct answer is option D.
The rolling of a complete ship side-ways is known as pitching of a ship.
TRUE
FALSE
✅ The correct answer is option B.