internally fired boiler
externally fired boiler
natural circulation boiler
forced circulation boi
✅ The correct answer is option C.
Mechanical Engineering MCQs
The thermal diffusivity for solids is generally less than those for liquids and gases.
TRUE
FALSE
✅ The correct answer is option B.
The surface finish is improved by the increase in
cutting speed
nose radius
true rake angle
all of these
✅ The correct answer is option D.
A leaf spring is supported at the
ends and loaded at the centre
centre and loaded at the ends
ends and loaded anywhere
centre and loaded anyw
✅ The correct answer is option B.
The chamfering is an operation of
bevelling the extreme end of a workpiece
embossing a diamond shaped pattern on the surface of a workpiece
reducing the diameter of a workpiece over a very narrow surface
enlarging the end of a
✅ The correct answer is option A.
The expansion of steam in a nozzle follows
Carnot cycle
Rankine cycle
Joule cycle
Stirling cycle
✅ The correct answer is option B.
The by-pass factor of a cooling coil decreases with
decrease in fin spacing and increase in number of rows
increase in fin spacing and increase in number of rows
increase in fin spacing and decrease in number of rows
decrease in fin spacin
✅ The correct answer is option A.
For welding plates of thickness less than 5 mm, its edges
do not require bevelling
should be bevelled to a single-V or U-groove
should have a double-V or U-groove on one side
should have a double-V
✅ The correct answer is option A.
The included angle for the acme thread is 29°.
TRUE
FALSE
✅ The correct answer is option A.
Which of the following statement is wrong as regard to down milling?
It can not be used on old machines due to backlash between the feed screw of the table and the nut.
The chips are disposed off easily and do not interfere with the cutting.
The surface milled appears to be slightly wavy.
The coolant can be pou
✅ The correct answer is option C.