**691. Fluid flow in a/an ______________ is an example of pressure flow?**

A. Partially filled pipeline**B. Pipe**

C. Open channel

D. River

**693. In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is ______________ the fluid viscosity?**

A. Directly proportional to**B. Inversely proportional to**

C. Inversely proportional to the square root of

D. Independent of

**694. In case of a Rotameter, the density of the float material is _____________ that of the liquid it replaces?****A. More than**

B. Less than

C. Equal to

D. Either A. or B.

**695. For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the wall of the pipe and the friction velocity ‘v’, and it follows a _____________ relationship?****A. Logarithmic**

B. Linear

C. Hyperbolic

D. Parabolic

**696. A fluid (μ/ρ) = 0.01 cm2/sec is moving at critical flow condition (NRe = 2100) through a pipe of dia 3 cms. Velocity of flow is _______________ cm/sec?****A. 7**

B. 700

C. 7000

D. 630

**697. Which of the following factors does not contribute to the pressure drop in a pipeline ?**

A. Velocity of fluid

B. Size of pipe

C. Length of pipe and number of bends**D. None of these**

**698. What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water interface? The balloon is of radius 0.1 m and is filled with air ?****A. 4πg/3**

B. 0.01 πgH/4

C. 0.01 πgH/8

D. 0.04 πgH/3

**699. Which of the following fluid forces are not considered in the Navier-Stoke’s equation ?**

A. Gravity forces

B. Viscous forces

C. Pressure forces**D. Turbulent forces**

**700. A lubricant 100 times more viscous than water would have a viscosity (in Pa.s) ?**

A. 0.01**B. 0.1**

C. 1

D. 10

**NOTEIF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.THANK YOU**