MECHANICAL AND ELECTRICAL
QUESTIONS WITH ANSWERS 100%
SOLVED
# Term Definition
1 What is plumbing
the system of pipes fixtures and other appurtencances
that supply water to a structure from a source such as a
water main and remove it with any asscoiated
waterborne wastes to a destination such as a sewer
main.
2 the NATIONAL PLUMBING CODE
What is widely accepted as a guideline
for plumbing desing minimum
requirements?
3
Why is copper one of the most widely Doesnt rust & is resistant to accumulation of scale
used materials for tubing? particles in the pipe.
4 what is Type K copper pipe?
thickest wall pipe used underground between water
mains and the water meter.
5 what is Type L copper Pipe
thinner wall pipe used from water meter and in water
distribution
6 what is Type M copper pipe
thin wall pipe used inside homes for branch supplies
where water pressure is low.
7 if the water has a low-pH
When should copper not be installed?
8 What is CPVC
a stiffer plastic pip desing for greater resistance to impact
and extreme temp. 210 degrees F
, 9 CPVS is more malleable
What is the difference between CPVC
and PVC
10 The inside diameter.
how are galvanized pipes measured?
11 pressure and recessed
Whate 2 types of malleable iron or cast
iron pipe fittings are used for steel pipe
or wrought iron?
12 Durham fitting is also known as a cast-iron fitting
# Term Definition
13 3
How many parts does a ground joint
union have?
14 2
how many parts does a flange union
have?
15 Not be in line with each other.
An eccentric reducer joins pipes of
different sizes so the two pieces of pipe
will...
16 A nipple is a? Length of pipe with a male thread on each end
17 aboveground or in the building interior.
Any pipe ______ must be adequately
supported to prevent sagging.
18 to prevent pip displacement casued by high water
on water mains, thrust blocks should be pressure.
installed for what purpose?
QUESTIONS WITH ANSWERS 100%
SOLVED
# Term Definition
1 What is plumbing
the system of pipes fixtures and other appurtencances
that supply water to a structure from a source such as a
water main and remove it with any asscoiated
waterborne wastes to a destination such as a sewer
main.
2 the NATIONAL PLUMBING CODE
What is widely accepted as a guideline
for plumbing desing minimum
requirements?
3
Why is copper one of the most widely Doesnt rust & is resistant to accumulation of scale
used materials for tubing? particles in the pipe.
4 what is Type K copper pipe?
thickest wall pipe used underground between water
mains and the water meter.
5 what is Type L copper Pipe
thinner wall pipe used from water meter and in water
distribution
6 what is Type M copper pipe
thin wall pipe used inside homes for branch supplies
where water pressure is low.
7 if the water has a low-pH
When should copper not be installed?
8 What is CPVC
a stiffer plastic pip desing for greater resistance to impact
and extreme temp. 210 degrees F
, 9 CPVS is more malleable
What is the difference between CPVC
and PVC
10 The inside diameter.
how are galvanized pipes measured?
11 pressure and recessed
Whate 2 types of malleable iron or cast
iron pipe fittings are used for steel pipe
or wrought iron?
12 Durham fitting is also known as a cast-iron fitting
# Term Definition
13 3
How many parts does a ground joint
union have?
14 2
how many parts does a flange union
have?
15 Not be in line with each other.
An eccentric reducer joins pipes of
different sizes so the two pieces of pipe
will...
16 A nipple is a? Length of pipe with a male thread on each end
17 aboveground or in the building interior.
Any pipe ______ must be adequately
supported to prevent sagging.
18 to prevent pip displacement casued by high water
on water mains, thrust blocks should be pressure.
installed for what purpose?
