0.001 second
0.002 second
0.003 second
0.004 second
✅ The correct answer is option B.
Mechanical Engineering MCQs
The ignition quality of petrol is expressed by
cetane number
octane number
calorific value
all of these
✅ The correct answer is option B.
The wet bulb depression is zero when relative humidity is
zero
0.5
0.75
1
✅ The correct answer is option D.
The ratio of the inertia force to the elastic force is called
Reynold’s number
Froude’s number
Weber’s number
Mach number
✅ The correct answer is option D.
When slack of an activity is positive
it represents a situation where extra resources are available and the completion of project is not delayed
it represents that a programme falls behind schedule and additional resources are required to complete the project in time
the activity is critical and any delay in its performance will delay the completion of whole project
any one of the above
✅ The correct answer is option A.
The Klein’s method of construction for reciprocating engine mechanism
is a simplified version of instantaneous centre method
utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine
enables determination of coriolis component
is based on the accele
✅ The correct answer is option B.
In thrust bearings, the load acts
along the axis of rotation
parallel to the axis of rotation
perpendicular to the axis of rotation
in any direction
✅ The correct answer is option A.
In involute gears, the pressure angle is
dependent on the size of teeth
dependent on the size of gears
always constant
always variable
✅ The correct answer is option C.
According to Euler’s column theory, the crippling load for a column of length (l) fixed at both ends is __________ the crippling load for a similar column hinged at both ends.
equal to
two times
four times
eight times
✅ The correct answer is option C.
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of
grey colour
white colour
yellow colour
brown colour
✅ The correct answer is option A.