The chemical formula of othophosphoric acid is
A.H3PO3
B.H3PO4
C.H4P2O7
D.HPO3
Category: Engineeeing Mcqs
The ‘crowning’ of flat pulleys is generally done
A.To rduce the belt friction
B.To prevent belt joint from damaging the belt surface
C.To prevent the belt from running off the pulley
D.In case of cross belt drives only
E.None of the above
In thermodynamics, forced processes are those
A.Where a difference is observed in any microscopic property of the system between different times of states
B.Where a difference is observed in any microscopic property of the system between different times or states
C.Which occur in the direction of an intensive property or driving force contained within the system
D.Which require an agency outside the system to force the process
E.None of the above
The angular velocity of earth is
A.0.00727 sec-1
B.0.000727 sec-1
C.0.0000727 sec-1
D.0.00000727 sec-1
E.None of the above
The unit of thermal conductivity in S.I. units is
A.W/m-hr-?K
B.W/m-hr?C
C.W/m?K
D.KJ/m-hr?C
E.KJ/m-hr-?K
If unit loads rest upon a beam at two points A and B, the deflection at A due to unit load at B, equals the deflection at B due to the unit load at A. This is known as
A.Rankine’s theorem
B.Mohr’s hypothesis
C.Castigliano’s theorem
D.Maxwell’s theorem
E.None of the above
Which of the following holes appear on the surface of the casting when it is machined?
A.Blow holes
B.Pin holes
C.Gas holes
D.Slag holes
Break even analysis requires
A.fixed cost
B.variable cost
C.income
D.none of the above
Which part is not common between the petrol and diesel engines
A.Air cleaner
B.Exhaust silencer
C.Battery
D.Dynamo
E.Fuel injector
