same throughout
in progressively decreasing order
in progressively increasing order
none of these
✅ The correct answer is option C.
Mechanical Engineering MCQs
The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.
inner edge
outer edge
✅ The correct answer is option A.
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is
39.20%
48, 8%
84.80%
88.40%
✅ The correct answer is option C.
According to Rankine’s theory, the failure occurs at a point in a member
when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in a simple tension test
when the maximum principal stress in a bi-axial stress system reaches the elastic limit of the material in a simple tension test
when the strain energy per unit volume in a bi-axial stress system reaches the strain energy at the elastic limit per unit volume as determined from a simple tension test
when the maximum princ
✅ The correct answer is option B.
Liquid fuels have higher calorific value than solid fuels.
Yes
No
✅ The correct answer is option A.
The amount of heat required to raise the temperature of 1 kg of water through one Kelvin is called
specific heat at constant volume
specific heat at constant pressure
kilo-Joule
none of these
✅ The correct answer is option C.
The indicated thermal efficiency is defined as the
ratio of thermal efficiency to the Rankine efficiency
ratio of brake power to the indicated power
ratio of heat equivalent to indicated power to the energy supplied in steam
product of thermal eff
✅ The correct answer is option C.
An open coiled helical compression spring ‘A’ of mean diameter 50 mm is subjected to an axial load W. Another spring ‘B’ of mean diameter 25 mm is similar to spring ‘A’ in all respects. The deflection of spring ‘B’ will be __________ as compared to spring ‘A’.
one-eighth
one-fourth
one-half
double
✅ The correct answer is option A.
When a rectangular beam is loaded transversely, the maximum tensile stress is developed on the
top layer
bottom layer
neutral axis
every cross-section
✅ The correct answer is option A.