400. The density of supersaturated steam in comparison to ordinary saturated steam at the corresponding pressure is about
A.0.125 times
B.8 times.
C.1 times
D.4 times

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401. If in Prob. 4.454, the exit pressure is below critical pressure, say 50 kg/cm2, then following curve will hold good
A.Curve A
B.Curve B
C.Curve C
D.Curve D

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402. If the cross-section of a nozzle is increasing in the direction of flow in supersonic flow, then in the downward dierction
A.Pressure will decrease and velocity will increase
B.Velocity will decrease and pressure will increase
C.BOth pressure and velocity will increase
D.Both pressure and velocity will deerease

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403. The flow of steam in a nozzle is subsonic at
A.Throat
B.Entrance
C.Convergent portion
D.Divergent portion

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404. If the cross-section of a nozzle is decreasing in the direction of flow in sub-sonic flow, then in the downward direction
A.Pressure will decrease and velocity increase
B.Velocity will decrease and pressure increse
C.Both pressure and velocity increase
D.Both pressure and velocity decrease

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405. A nozzle is said to be choked when
A.Flow through it is zero
B.Flow is attained at maximum value corresponding to critical exit pressure
C.It is not possible to increase the 'flow by increasing inlet pressure
D.It is discharging into atmosphere

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406. The supersaturation of steam results in slight
A.Increase in entropy
B.All of the above.
C.Increase of discharge
D.Increase of density

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