Related Questions

Stress may be expressed in Newtons
A Per millimetre square (N/mm2)
B Per centimetre square (N/cm2)
C Per metre square (N/m2)
D None of these
The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)
A 1420 d
B 1680 d
C 2080 d
D 2840 d
According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition.
A No component is concentrated at the surface of the solution
B The component molecules are non polar and are of almost equal size
C In the formation of solution, chemical combination/molecular association between unlike molecules takes place
D The attractive forces between like and unlike molecules are almost equal
Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the
A Sizes of the component molecules are approximately equal
B Attractive forces between like and unlike molecules are approximately equal
C Component molecules are non-polar and no chemical combination or molecular association between unlike molecules takes place in the formation of the solution
D All of the above
Which one of the following is not an assumption in the law of demand?
A There are no changes in the taste and preferences of consumers
B Income of consumers remains constant
C Consumers are affected by demonstration effect
D There are no changes in the price of substitute goods.
Which one is the assumption of law of demand
A Price of the commodity should not change
B Quantity demanded should not change
C Prices of substitutes should not change
D Demand curve must be linear
Which one is not a assumption of the theory of demand based on analysis of indifference curves?
A Given scale of preferences as between different combinations of two goods
B Diminishing marginal rate of substitution
C Constant marginal utility of money
D Consumers would always prefer more of a particular good to less of it, other things remaining the same
The black box concept is based on the assumption(s) that;
A the suprasystem is stable
B black boxes are dependent or environments
C the relationship between the inputs and output is stable
D All of the above
E None of the above
The Euler's equation for the motion of liquids is based upon the assumption that
A The fluid is non - viscous, homogeneous and incompressible
B The velocity of flow is uniform over the section
C The flow is continuous, steady and along the stream line
D All of the above
The Bernoulli's equation is based on the assumption that
A There is no loss of energy of the liquid flowing
B The velocity of flow is uniform across any cross-section of the pipe
C No force except gravity acts on the fluid
D All of the above

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