The action of a catalyst follows its ability to change the
A.heat of reaction
B.heat of formation of the product
C.activation energy
D.equilibrium constant.
Category: Engineeeing Mcqs
A Newtonian fluid is one which
A.is frictionless and incompressible
B.has a linear relationship between the magnitude of applied shear stress and the resulting rate of deformation
C.has a nonlinear relationship between the magnitude of spplied shear stress and the resulting rate of deformation
D.has a vapor pressure of 1 N/m2 at 25?C.
Diffusion is
A.new use of existing knowledge.
B.spread of cultural trait from group to group.
C.combination of two or more cultures.
Which of the following is conserved across a shock wave?
A.Temperature
B.Pressure
C.Momentum
D.All of the above
A catalyst
A.decreases the activation energy
B.alters the reaction mechanism
C.increases the frequency of collisions of reacting species
D.all of these answers.
Coriolis component of acceleration will exist only if
A.There are two coincidental points
B.Two coincident points have relative angular velocity of sliding
C.Two coincidental points have linear relative velocity of sliding accompanied by the rotation about fixed centres
D.The two coincidental points must have same centre of rotation
E.None of the above
Rankine cycle efficiency for fixed steam temperature of any volume upto critical temperature will be maximum for steam pressure of
A.Critical pressure
B.100 kg/cm2
C.200 kg/cm2
D.203.5 kg/cm2
E.250 kg/cm2
A governor is said to be isochronous when
A.The equilibrium ball radii is constant for a given speed
B.For each speed within the working range the ball weights occupy a definite specific position
C.There is only one radius of the governor weights for each equilibrium sped
D.There is only one equibilbrium speed which is constant for all radii of rotation of the bells within the working range
E.None of the above
Pascal-second is the unit of
A.pressure
B.surface
C.kinematic viscosity
D.dynamic viscosity
