This set of Environmental Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Service Connection”.
1. A Service connection is a connection from the distribution system to the ______
a) Factory
b) School
c) Industry
d) Consumer
View Answer
Explanation: A consumer can be a single house, an apartment or a planned block development. A connection to a single house involves tapping the main and installing a corporation cock.
2. Which of the following is not a component of domestic service connection?
a) Water meter
b) Stopcock
c) Tube settler
d) Gooseneck
View Answer
Explanation: The various components of a domestic service connection are Brass ferrule, Gooseneck, Stopcock, Mains service pipe and Water meter.
3. The length of Goose neck in a domestic service connection is ____________
a) 10cm
b) 20cm
c) 30cm
d) 40cm
View Answer
Explanation: The Goose neck consists of 40-50cm curved piece of pipe which prevents the breaking of the main service pipe.
4. Which device is used to measure the quantity of water consumed by the consumer?
a) Water meter
b) Stopcock
c) Tube settler
d) Gooseneck
View Answer
Explanation: Water meter is used to measure the quantity of water consumed by the consumer. It is installed in a suitable chamber with cover.
5. Which of the following is incorrect regarding water meter?
a) Should be durable
b) Easy to maintain and repair
c) Should allow backflow of water
d) Should be rugged
View Answer
Explanation: Water meter should prevent the back flow of water passing through it. It should not be liable to clogging.
6. Which device is used to measure the velocity of flow for high flows?
a) Water meter
b) Inferential meter
c) Globe valve
d) Gate valve
View Answer
Explanation: Inferential meter measures the velocity of flow across a cross section whose area is known. They are only used for high flows.
7. Which of the following is an example of Inferential meter?
a) Turbine meter
b) Hydrometer
c) Water meter
d) Gate valve
View Answer
Explanation: Turbine and rotary meters are examples of Inferential meter. It is also called as velocity meter as they measure the velocity of flow.
8. Which device is used to measure velocity for low flows?
a) Water meter
b) Inferential meter
c) Globe valve
d) Displacement meter
View Answer
Explanation: Displacement meter is used to measure velocity for flows. Reciprocating, Rotary, Oscillating and Nutating disc meter are the examples of Displacement meter.
9. Which of the following pipe material has a maximum modulus of elasticity?
a) Concrete
b) Mild steel
c) Cast iron
d) PVC
View Answer
Explanation: Mild steel has the maximum modulus of elasticity with a magnitude of 2.1 *1010. The modulus of elasticity of concrete, cast iron and PVC are 2.8*109, 7.5*109 and 3*108 respectively.
Sanfoundry Global Education & Learning Series – Environmental Engineering.
To practice all areas of Environmental Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.
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