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Fluid Mechanics for Chemical Quiz 12

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Fluid Mechanics for Chemical Quiz 12

1 / 50

The unit of dynamic viscosity in SI unit is___________?

2 / 50

The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its ___________?

3 / 50

The speed of a sound wave in a gas is analogous to the speed of ________?

4 / 50

The Stoke?s stream function applies to the_________?

5 / 50

The pump impeller and the turbine runner in a hydraulic torque converter_____?

6 / 50

The pitot static tube does not measure the ______ pressure?

7 / 50

The pressure co-efficient is the ratio of pressure forces to _______ forces?

8 / 50

The Prandtl Pitot tube measures the___________?

9 / 50

The ratio of width to depth for the most economical rectangular section in open channel flow is__________?

10 / 50

The ratio of inertial forces to elastic forces is called the __________ number?

11 / 50

The time of oscillation of a floating body is __________?

12 / 50

The rate of change of moment of momentum represents the _______ by the fluid?

13 / 50

The pressure drop per unit length of pipe incurred by a fluid ?X? flowing through pipe is ?p. If another fluid ?Y? having both the specific gravity & density just double of that of fluid ?X?, flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be___________?

14 / 50

The ratio of actual discharge to theoretical discharge through an orifice is equal to_______?

15 / 50

The specific speed of a pump is defined as the speed of a unit of such a size, that it___________?

16 / 50

The terminal velocity of a particle moving through a fluid varies as dp n. What is the value of n? for Newton?s law regime ?

17 / 50

The Reynolds number for an ideal fluid flow is __________?

18 / 50

The pressure head of a flow meter remains constant for__________?

19 / 50

The pressure at a point in a fluid is not the same in all directions, when the fluid is viscous and_____?

20 / 50

The simple Pitot tube does not measure the_________?

21 / 50

The ratio of inertial forces to gravity forces is called the _______ number?

22 / 50

The valve used for very remote and accurate control of fluid is a ______ valve?

23 / 50

The resistance wire used in a hot wire anemometer for conducting electrical current is made of___________?

24 / 50

The ratio of the depth of flow to the hydraulic radius for the most economical trapezoidal section, in open channel flow is_______?

25 / 50

The pressure head on sudden contraction in a horizontal pipe is converted into the ______ head?

26 / 50

The range of a particular Rotameter can be increased by___________?

27 / 50

The pressure and power requirement of a gas fan at constant speed & capacity varies _____ the gas density?

28 / 50

The ratio of inertial forces to viscous forces is called the _______ number?

29 / 50

The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke?s law range is proportional to the_______?

30 / 50

The ratio of hydrodynamic boundary layer to thermal boundary layer thickness in case of liquid metals is___________?

31 / 50

The rate of shear versus the shear stress curves are time dependent for ______ fluid?

32 / 50

The ratio of maximum to average velocity in case of streamline flow between parallel plates is________?

33 / 50

The pressure intensity is the same in all directions at a point in a fluid_________?

34 / 50

The terminal velocity of a particle moving through a fluid varies as dp n. The value of n is equal to ________ in Stoke?s law regime?

35 / 50

The value of critical Reynolds number for pipe flow is__________?

36 / 50

The ratio of average fluid velocity to the maximum velocity in case of laminar flow of a Newtonian fluid in a circular pipe is_______?

37 / 50

The ratio of the hydraulic radius to the diameter of the channel, for maximum mean velocity of flow in a circular channel, in open channel flow is__________?

38 / 50

The ratio of the depth of flow to the diameter of the channel for maximum discharge in a circular channel in open channel flow is_________?

39 / 50

The Prandtl mixing length is__________?

40 / 50

The uniformity of a gas fluidised bed depends upon the ________ of the solid particles?

41 / 50

The unit of bulk modulus of elasticity for a liquid in S.I. unit is______?

42 / 50

The simple Pitot tube measures the ________ pressure?

43 / 50

The schedule number of a pipe is an indication of its__________?

44 / 50

The ratio of pressure forces to inertial forces is called the ________ number?

45 / 50

The valve commonly used in pipes larger than 2? dia is a_______?

46 / 50

The unit of velocity head is__________?

47 / 50

The speed of sound in an ideal gas varies as the ___________?

48 / 50

The ratio of the wall drag to the form drag in the Stoke?s law range (for motion of spherical particles in a stationary fluid) is___________?

49 / 50

The ratio of wall drag to total drag in the Stoke?s law range is__________?

50 / 50

The temperature in isentropic flow________?

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