1401. An optimal liquid streams with 12m/s in a flat line . In the event that the line extends to two times its unique span, What is the stream speed in the more extensive area ?

A. 12.0 M/S
B. 6.00 M/S
C. 4.00 M/S
D. 3.00 M/S *

1402. If Wood and Iron ball of same size is falling in same viscous fluid than which ball will reach the ground first :

A. Wood Ball
B. Iron Ball *
C. Both Reach Same time
D. None of these

1403. Which one of coming up next is related with the law of preservation of energy in liquids ?

A. Archimedes’ principle
B. Bernoulli’s principle *
C. Pascal’s Principle
D. Equation of continuity

1404. When you blow some air above a paper strip, the paper rises, This is because :

A. The air above the paper moves faster and the pressure is higher
B. THe air above the paper moves faster and the pressure is lower *
C. The air above the paper moves slower and the pressure is higher
D. The air above the paper moves slower and the pressure is lower

1405. In laminar flow adjacent layers of fluid :

A. Resist each other motion
B. Slide smoothly passed each other *
C. Mix in each other
D. None of the above

1406. Which of coming up next isn’t a unit of tension :

A. Atmosphere
B. N/M *
C. Pascal
D. MM of mercury

1407. If flow rate in a pipe is “F” if we take another pipe of double lenght having same cross sectional area and maintain same pressure difference at the two ends of pipe. than flow rate will :

A. Increase
B. Decrease
C. Remains same *
D. None of these

1408. As the speed of a moving fluid increases ,the pressure in the fluid :

A. Increase
B. Remains constant
C. Decrease *
D. May increase or decrease, depending on a viscosity

1409. Two rowboats moving parallel in the same direction will :

A. Remain moving in the same direction
B. Be pulled towards each other *
C. Get a part due to increase in pressure
D. None

1410. The Most extreme drag force on the falling circle in 9.8N, its weight is :

A. 1N
B. 9.8N *
C. Cannot be calculated
D. 4.9N