Select the incorrect statement?

A. The pressure intensity at vena contracta is atmospheric
B. Contraction is least at vena contracta
C. Stream lines are parallel throughout the jet at vena contracta
D. Coefficient of contraction is always less than one

The viscosity of a gas_______________?

A. decreases with increase in temperature
B. increases with increase in temperature
C. is independent of temperature
D. is independent of pressure for very high pressure intensities

When an ideal fluid flows past a sphere________________?

A. highest intensity of pressure occurs around the circumference at right angles to flow
B. lowest pressure intensity occurs at front stagnation point
C. lowest pressure intensity occurs at rear stagnation point
D. total drag is zero

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