# Losses In Pipe Valves And Fittings - MCQs and Answers

## Losses In Pipe Valves And Fittings – MCQs and Answers

1. What are the reasons causing pressure drop in hydraulic systems?

1. long length of pipe
2. friction
3. type of fluid
4. losses in valves and bends

a. 1 and 4
b. only 1
c. 2 and 3
d. all the above

2. Calculate area of a pipe if, flow rate is 20 l/min and flow velocity is 5 cm/s.

a. 66.66 cm2
b. 60 cm2
c. 62 cm2
d. none of the above

3. Which formula is used to calculate head loss in valves?

a. K2 ( v / 2 g )
b. K ( v / 2 g )
c. K ( v2 / 2 g )
d. none of the above

ANSWER: c. K ( v2 / 2 g )

#### Discussion

• RE: Losses In Pipe Valves And Fittings - MCQs and Answers -Osama Hussain (01/16/19)
• 2. Calculate area of a pipe if, flow rate is 20 l/min and flow velocity is 5 cm/s.

a. 66.66 cm2
b. 60 cm2
c. 62 cm2
d. none of the above

• Calculate are of a pipe if, flow rate is 20 L/min and flow velocity is 5 cm/s. -Uttamkumar Jagtap (08/19/17)
• Given: Flow Rate = 20 litre/min.
Flow Velocity = 5 cm/s
Formula: Flow Rate = Velocity x Area
Solution:
Flow rate = 20 litre/min
= 20,0000 cm3/60s
= 333.33 cm3/s
Flow Rate = Velocity x Area
333.33cm3/s = 5cm/s x Area
Area = 333.33cm3/s / 5 cm/s
= 66.66 cm2

Are of a pipe is 66.66 cm2
• RE: Losses In Pipe Valves And Fittings - MCQs and Answers -Uttamkumar Jagtap (08/19/17)
• HOW TO CALCULATE
2. Calculate area of a pipe if, flow rate is 20 l/min and flow velocity is 5 cm/s.

a. 66.66 cm2
b. 60 cm2
c. 62 cm2
d. none of the above