✅ The correct answer is option B.
Mechanical Engineering MCQs
A simply supported beam ‘A’ of length l, breadth b and depth d carries a central load W. Another beam ‘B’ of the same dimensions carries a central load equal to 2 W. The deflection of beam ‘B’ will be __________ as that of beam ‘A’.
one-fourth
one-half
double
four times
✅ The correct answer is option C.
The cold chisels are made from
cast iron
mild steel
high speed steel
cast tool steel
✅ The correct answer is option D.
The strength of the shaft is judged by the torque transmitted by the shaft.
Yes
No
✅ The correct answer is option A.
For circumferential joint in boilers, the type of joint used is
butt joint with single cover plate
butt joint with double cover plate
lap joint with one ring overlapping the other
any one of the above
✅ The correct answer is option C.
The advantage of a tubeless tyre over tube type tyre is
slow air leakage
better fuel efficiency
less chances of running flat
all of these
✅ The correct answer is option D.
The petrol engine works on
Otto cycle
Carnot cycle
Diesel cycle
Rankine cycle
✅ The correct answer is option A.
Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)
I.P. = a x m + b
m = a + b x I.P.
I.P. = b x m + a
m = b/I.P. – a
✅ The correct answer is option B.
The thrust force will increase with the increase in
side cutting edge angle
tool nose radius
rake angle
end cutting edge angle
✅ The correct answer is option A.
The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the lengm of connecting rod to radius of crank)
m.ω2.r sin θ
m.ω2.r cos θ
m.ω2.r
m.ω2.r
✅ The correct answer is option B.