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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