FRIDAY WEEKLY EXAM (27/06/2025)

FRIDAY WEEKLY EXAM (27/06/2025)

Professional Development

100 Qs

quiz-placeholder

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FRIDAY WEEKLY EXAM (27/06/2025)

FRIDAY WEEKLY EXAM (27/06/2025)

Assessment

Quiz

Professional Development

Professional Development

Medium

Created by

WINCENTRE CLASSES

Used 1+ times

FREE Resource

100 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which pipe joint is most suitable for temporary installations where frequent dismantling is required?
Flexible joint
Flanged joint
Expansion joint
Screwed joint

Answer explanation

Flanged joints are used in metal pipes where dismantling is needed, making them suitable for temporary setups.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The most commonly used sewer material for house or lateral sewers, which is cheap and durable but heavy and brittle, is:
Vitrified clay pipe
Cast iron pipe
RCC pipe
Asbestos cement pipe

Answer explanation

Vitrified clay pipes are cheap, hydraulically efficient, but heavy and brittle, commonly used in house sewers.

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which sewer section is preferred for storm water drainage and is easy to construct and economical?
Box section
Egg-shaped section
Circular section
Horse-shoe section

Answer explanation

Box section sewers are easier to construct and economical, commonly used for large storm water drainage systems.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is NOT a function of a trap in house drainage?
Providing water seal
Preventing foul gas entry
Collecting waste water
Admitting storm water

Answer explanation

Traps do not serve the function of admitting storm water; their purpose is to maintain a water seal and prevent foul gas entry.

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In sewer maintenance, which test uses a smooth ball passed through the sewer to detect blockages?
Smoke test
Ball test
Air test
Mirror test

Answer explanation

Ball test is used by passing a smooth ball through the sewer to check for obstructions and ensure clear flow.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the minimum recommended internal diameter for sewers according to standards?
10 cm
15 cm
30 cm
45 cm

Answer explanation

The minimum recommended internal diameter for sewers is 15 cm to ensure effective flow and maintenance access.

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Match the following sewer components with their specific characteristics: A. Inverted Siphon B. Drop Manhole C. Flushing Tank D. Lamp Hole 1. Allows inspection using light insertion 2. Provides vertical connection between high and low level sewers 3. Enables sewage to pass under obstacles under pressure 4. Clears sewers near dead ends with stored water
A-3, B-2, C-4, D-1
A-4, B-3, C-2, D-1
A-1, B-4, C-3, D-2
A-2, B-1, C-4, D-3

Answer explanation

Inverted siphon passes sewage under obstacles (A-3), Drop manhole connects different levels (B-2), Flushing tanks clear dead ends (C-4), Lamp holes allow light-based inspection (D-1).

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