# Hydraulics and Fluid Mechanics - Part 1 Online Exam Quiz

Hydraulics and Fluid Mechanics - Part 1 GK Quiz. Question and Answers related to Hydraulics and Fluid Mechanics - Part 1. MCQ (Multiple Choice Questions with answers about Hydraulics and Fluid Mechanics - Part 1

### One litre of water occupies a volume of

**Options**

A : 100 cm 3

B : 250 cm 3

C : 500 cm 3

D : 1000 cm 3

### The value of bulk modulus of a fluid is required to determine

**Options**

A : Reynold's number

B : Froude's number

C : Mach number

D : Euler's number

### In a depressed nappe

**Options**

A : the pressure below the nappe is atmospheric

B : the pressure below the nappe is negative

C : the pressure above the nappe is atmospheric

D : the pressure above the nappe is negative

### In one dimensional flow, the flow

**Options**

A : is steady and uniform

B : takes place in straight line

C : takes place in curve

D : takes place in one direction

### The kinematic viscosity is the

**Options**

A : ratio of absolute viscosity to the density of the liquid

B : ratio of density of the liquid to the absolute viscosity

C : product of absolute viscosity and density of the liquid

D : product of absolute viscosity and mass of the liquid

### The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

**Options**

A : C d 2 g x H

B : C d 2 g x H 3/2

C : C d 2 g x H 2

D : C d 2 g x H 5/2

### A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

**Options**

A : equal to.

B : less than

C : more than

D : -

### A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where w = Specific weight of liquid, and H = Height of liquid)

**Options**

A : wH

B : wH /2

C : wH 2 /2

D : wH 2 /3

### An error of 1% in measuring head over the apex of the notch ( H ) will produce an error of __________ in discharge over a triangular notch.

**Options**

A : 1%

B : 1.5%

C : 2%

D : 2.5%

### Coefficient of contraction is the ratio of

**Options**

A : actual velocity of jet at vena contracta to the theoretical velocity

B : loss of head in the orifice to the head of water available at the exit of the orifice

C : actual discharge through an orifice to the theoretical discharge

D : area of jet at vena contracta to the area of orifice

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