Related Questions

Read the following passage carefully and then choose the right word to complete the sentence that follows. Rockets are very expensive as it can be used only once. Appled scientists have therefore develped a reusable space craft called a space shuttle which takes off like a rocket; however, does no get destroyed as it returns to earth. It can also be used to lunch satellired into space, retrieve them from space if any repairing os required and allow around 8 scientists to crryout experiments in space. The space shuttle does not get.
A flattened
B enlarged
C ruined
D developed
The potential gradient across the material of low permittivity is than across the material of high permittivity.
A smaller
B greater
C both (A) and (B)
D none of the above
The absolute permittivity of free space is given by
A 8.854 x 10-9 F/m
B 8.854 x 10-10 F/m
C 8.854 x 10-11 F/m
D 8.854 x 10-12 F/m
The dielectric constant (relative permittivity) of glass is given by
A 0.1 to 0.4
B 0.5 to 1.0
C 2.0 to 4.0
D 5 to 100
The relative permittivity of rubber is
A Between 2 and 3
B Between 5 and 6
C Between 8 and 10
D Between 12 and 14
The relative permittivity has the following units
A F/m
B m/F
C Wb/m
D no units
During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
A Equal to
B Equal and opposite to
C Less than
D Greater than
In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade.
A Equal to
B Less than
C Greater than
D None of these
Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when
A Only vapor phase follows Raoult's law
B Only liquid phase obeys Dalton's law
C Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law
D Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law
__________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals.
A Separation efficiency
B Selectivity index
C Concentration ratio
D None of these

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