0.15 to 0.3
0.4 to 0.5
0.6 to 0.9
1 to 1.5
✅ The correct answer is option A.
Mechanical Engineering MCQs
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be
15
17
21
25
✅ The correct answer is option B.
Thermosetting plastics are those materials which
are formed into shape under heat and pressure and results in a permanently hard product
do not become hard with the application of heat and pressure and no chemical change occurs
are flexible and can withstand considerable wear under suitable conditions
are used as a friction
✅ The correct answer is option A.
Which of the following is a turning pair?
Piston and cylinder of a reciprocating steam engine
Shaft with collars at both ends fitted into a circular hole
Lead screw of a lathe with nut
Ball and a socket join
✅ The correct answer is option B.
The discharge through a nozzle is maximum for a certain value of exit pressure. This pressure is known as critical pressure.
Agree
Disagree
✅ The correct answer is option A.
The equivalent evaporation is defined as
the ratio of heat actually used in producing the steam to the heat liberated in the furnace
the amount of water evaporated or steam produced in kg per kg of fuel burnt
the amount of water evaporated from and at 100° C into dry and saturated steam
the evaporation of 15.
✅ The correct answer is option C.
According to Indian standard specifications, a grey cast iron designated by ‘FG 200’ means that the
carbon content is 2%
maximum compressive strength is 200 N/mm2
minimum tensile strength is 200 N/mm2
maximum shear strength
✅ The correct answer is option C.
The colour of exhaust from diesel engine is generally
white
bluish
black
violent
✅ The correct answer is option C.
The layer at the centre of gravity of the beam as shown in the below figure, will be
in tension
in compression
neither in tension nor in compression
✅ The correct answer is option C.
The bending moment M and a torque T is applied on a solid circular shaft. If the maximum bending stress equals to maximum shear stress developed, then M is equal to
T/2
T
2 T
4 T
✅ The correct answer is option A.