parallel to the crankshaft
perpendicular to the crankshaft
inclined to the crankshaft
none of these
✅ The correct answer is option A.
Mechanical Engineering MCQs
A petrol engine of a car develops 125 N-m torque at 2700 r.p.m. The car is driven in second gear having gear ratio of 1.75. The final drive ratio is 4.11. If the overall transmission efficiency is 90%, then the torque available at the driving wheels is
8.091 N-m
80.91 N-m
809.1 N-m
8091 N-m
✅ The correct answer is option C.
The theoretically correct mixture of air and petrol is
10:01
15:01
20:01
25:01:00
✅ The correct answer is option B.
The mass of flue gas per kg of fuel is the ratio of the
mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel
mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas
mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel
mass of carbon in 1 kg
✅ The correct answer is option C.
A compressor must be driven by some prime mover.
Agree
Disagree
✅ The correct answer is option A.
The amount of heat flow through a body by conduction is
directly proportional to the surface area of the body
directly proportional to the temperature difference on the two faces of the body
inversely proportional to the thickness of the body
all of the above
✅ The correct answer is option D.
When the finely ground coal is moulded under pressure with or without a binding material, the resulting fuel is called briquetted coal.
Yes
No
✅ The correct answer is option A.
Valve analysis is particularly of interest when
jobbing work economics are involved
production is on large scale
only few components are involved
costly equipment is us
✅ The correct answer is option B.
The deformation of a bar under its own weight is __________ the deformation, if the same body is subjected to a direct load equal to weight of the body.
equal to
half
double
quadruple
✅ The correct answer is option B.
A furnace is made of a red brick wall of thickness 0.5 m and conductivity 0.7 W/mK. For the same heat loss and temperature drop, this can be replaced by a layer of diatomite earth of conductivity 0.14 W/mK and thickness
0.5 m
0.1 m
0.2 m
0.5 m
✅ The correct answer is option B.