A. ratio of inertial force to force due to viscosity
B. ratio of inertial force to force due to gravitation
C. ratio of inertial force to force due to surface tension
D. all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity
Related Mcqs:
- A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?
A. 900 minutes
B. 4 minutes
C. 4 x (225)3/2 minutes
D. 4 (225)1/3 minutes
E. 4 x V225 minutes - A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?
A. 1 : 5
B. 1 : 2.5
C. 1 :25
D. 1:V5″
E. 1 : 53/2 - A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?
A. 10 m/sec
B. 25 m/sec
C. 2 m/sec
D. 50 m/sec
E. 250 m/sec - Which of the following is the unit of kinematic viscosity _________________?
A. pascal
B. poise
C. stoke
D. faraday
E. none of the above - The tendency of a liquid surface to contract is due to the following property_________________?
A. cohesion
B. adhesion
C. viscosity
D. surface tension
E. elasticity - If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water___________________?
A. 51 cm
B. 50 cm
C. 52 cm
D. 52.2 cm
E. 51.7 cm - Which of the following instrument can be used for measuring speed of an aeroplane ________________?
A. Venturimeter
B. Orifice plate
C. hot wire anemometer
D. rotameter
E. pitot tube - Which of the following instrument can be used for measuring speed of a submarine moving in deep sea_________________?
A. Venturimeter
B. Orifice plate
C. hot wire anemometer
D. rotameter
E. pitot tube - Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem __________________?
A. Venturimeter
B. Orifice plate
C. nozzle
D. pitot tube
E. all of the above - Which of the following manometer has highest sensitivity __________________?
A. U-tube with water
B. inclined U-tube
C. U-tube with mercury
D. micro-manometer with water
E. displacement type
