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Fluid mechanics
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Propellers are axial flow mixers. [other wrong options] [Discuss in forum] |
| Q2 ⇒ In a/an __________ , the flow rate of fluids is obtained by measuring the difference between the impact and the static pressure. pitot tube [other wrong options] [Discuss in forum] |
| Q3 ⇒ In an incompressible fluid, the density is not affected with moderate change in temperature & pressure. [other wrong options] [Discuss in forum] |
| Q4 ⇒ For the free settling of a spherical particle through a fluid, the slope of, CD-log NRe , plot is -1 [other wrong options] [Discuss in forum] |
| Q5 ⇒ In a fluidised bed reactor temperature is more or less uniform. [other wrong options] [Discuss in forum] |
| Q6 ⇒ Fanning friction factor is equal to(where, fB = Blassius friction factor). fB/4 [other wrong options] [Discuss in forum] |
| Q7 ⇒ Which of the following is the most common pump for pumping either raw sewage or sludge ? Reciprocating pump [other wrong options] [Discuss in forum] |
| Q8 ⇒ With increase in temperature, the vapor pressure of liquids increases [other wrong options] [Discuss in forum] |
| Q9 ⇒ Hydraulic intensifier is used for increasing the intensity of pressure of the liquid. [other wrong options] [Discuss in forum] |
| Q10 ⇒ For a given fluid flow rate, which of the following incurs maximum head loss ? Orifice meter [other wrong options] [Discuss in forum] |
| Q11 ⇒ With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss remains constant [other wrong options] [Discuss in forum] |
| Q12 ⇒ Viscosity of water at 40°C lies in the range of 0.5 x 10-3 to 1 x 10-3 kg/m.s [other wrong options] [Discuss in forum] |
| Q13 ⇒ Centre of pressure in an immersed body is __________ the centre of gravity. below [other wrong options] [Discuss in forum] |
| Q14 ⇒ A differential pressure cell is used for remote recording of pressure difference. [other wrong options] [Discuss in forum] |
| Q15 ⇒ Which of the following pipe bends will incur the largest head loss ? U-bend [other wrong options] [Discuss in forum] |
| Q16 ⇒ In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure __________ the vapor pressure of the liquid at the suction temperature. higher than [other wrong options] [Discuss in forum] |
| Q17 ⇒ As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1 increases linearly with V. [other wrong options] [Discuss in forum] |
| Q18 ⇒ Speed of sound in an ideal gas depends on its temperature [other wrong options] [Discuss in forum] |
| Q19 ⇒ Drag force acting on a body does not depend upon the density of the body. [other wrong options] [Discuss in forum] |
| Q20 ⇒ Lower BWG means __________ of the tube. lower cross-section [other wrong options] [Discuss in forum] |
| Or |