BEST EXPO RUNZ ASSISTANCE WEBSITE. NO.1 BEST DELIVERY OF EXAM RUNZ
100% GUARANTEE OF GETTING ANSWERS MIDNIGHT..IT’S OUR CULTURE, NO DOUBT
===================================
PLUMBING AND PIPE FITTINGS-OBJ!
01-10: ADBCBAACCA
11-20: ACBBACBBAD
21-30: CCCCDDBDBC
31-40: BACDACCDCB
COMPLETED
===================================
INSTRUCTION: ANSWER FIVE(5) QUESTIONS ONLY
(2i)
INDUCED SIPHONAGE:
(Draw the diagram)
(2ii)
SELF SIPHONAGE:
(Draw the diagram)
(2iii)
COMPRESSION:
(Draw the diagram)
(2iv)
CAPILLARITY:
(Draw the diagram)
===================================
(3ai)
Wash Down Water Closet: The wash down water closet operates on the principle of direct flushing. When the flush is activated, water is rapidly released from the cistern into the bowl. This force pushes the waste directly through the trapway and into the drainage system. The bowl has a relatively shallow sump and a small water surface area.
(3aii)
Siphonic Water Closet: The siphonic water closet uses the principle of siphon action to remove waste. When flushed, water enters the bowl and begins to fill the trapway. As more water enters, it creates a siphon effect in the trap, drawing waste and water quickly through the system. This produces a quieter and more thorough flush compared to the wash down type.
(3b)
=Advantages of Wash Down Water Closet=
(i) Simple Maintenance: The wash down system has a straightforward flushing mechanism and fewer moving parts, making it easier and cheaper to maintain or repair when issues arise.
(ii) Cost-Effective: Wash down water closets are generally less expensive to produce and install. Their simple design also means lower water usage in some cases, making them economical.
=Advantages of Siphonic Water Closet=
(i) Efficient Waste Removal: The siphonic action ensures that waste is pulled away quickly and thoroughly, reducing the chance of leftover debris and promoting better hygiene.
(ii) Quiet Operation: Siphonic toilets operate more quietly compared to wash down types because the siphon effect reduces the noise of water rushing into the bowl, which is ideal for homes and public restrooms where noise control is preferred.
===================================
(4a)
(Draw the diagram)
The water pump shown operates on the principle of manual suction and is suitable for rural areas. When the handle is pushed down, it lifts the piston rod and piston inside the cylinder, creating a vacuum below the piston. This causes water to be sucked up through the check valve from the water source due to atmospheric pressure. When the handle is pulled back up, the piston moves downward, closing the lower check valve and opening the valve in the piston, allowing water to move above the piston.
(4bi)
The pump always remains primed:
To ensure the pump remains primed, to be always filled with water, it is equipped with a non-return (check) valve at the bottom of the suction pipe. This valve prevents water from flowing back into the source once drawn up. As a result, the pump remains filled with water even when not in use, eliminating the need for re-priming before each operation.
(4bii)
Sand and grit do not gain access to the suction pump: A strainer or filter screen is fitted at the lower end of the suction pipe or around the check valve. This prevents sand, grit, and other solid particles from entering the pump chamber. Additionally, locating the suction inlet a few inches above the bottom of the water source helps minimize the intake of sediments.
(4biii)
There is continuity of water supply on all strokes of the pump: The pump is designed with a double-action piston and valve mechanism, allowing water to be drawn during both the upward and downward strokes. While one valve opens to let water into the chamber, another allows the already collected water to move toward the discharge spout. This dual-valve setup maintains a steady flow and prevents interruptions in water delivery during operation.
===================================
(5a)
(Draw the diagram)
Capillarity is the ability of a liquid to flow in narrow spaces without the assistance of external forces like gravity. It occurs as a result of the adhesive force between the liquid and the surface of a solid, and the cohesive forces within the liquid itself.
(5bi)
Copper (Cu):
(i) Property: Excellent conductor of electricity and heat, malleable, and corrosion-resistant.
(ii) Symbol: Cu
(5bii)
Aluminium (Al):
(i) Property: Lightweight, non-corrosive, good conductor of heat and electricity, and highly recyclable.
(ii) Symbol: Al
(5biii)
Zinc (Zn):
(i) Property: Moderate strength, corrosion-resistant, and often used for galvanizing steel.
(ii) Symbol: Zn
(5biv)
Lead (Pb):
(i) Property: Heavy, soft, malleable, and resistant to corrosion and radiation.
(ii) Symbol: Pb
(5bv)
Tin (Sn):
(i) Property: Soft, malleable, low melting point, and resists corrosion from water.
(ii) Symbol: Sn
===================================
(6a)
(i) Induced Siphonage:
This occurs when water discharged from one sanitary fixture (like a toilet or bath) flows rapidly through a common waste pipe and creates a partial vacuum in the drainage system. This vacuum can draw water out of the trap of another fixture connected lower down the pipe. The rapid flow effectively “sucks” the water seal from the trap, breaking the barrier that prevents sewer gases from entering the building.
(ii) Self Siphonage:
Self siphonage happens when the water flowing out of a fixture itself creates a vacuum that pulls water from its own trap. This is common in fixtures that discharge water rapidly without proper venting. The moving plug of water in the waste pipe displaces air and reduces pressure behind it, causing the trap water to be siphoned out and the seal lost.
(6bi)
(i) PVC (Polyvinyl Chloride)
(ii) Cast Iron
(iii) Concrete
(6bii)
(i) PVC: Lightweight, resistant to corrosion, and easy to install.
(ii) Cast iron: Strong and durable, with good sound-insulating properties.
===================================
COMPLETED….We Remain Your Favourite Site.
Ensure You Subscribe For Your Next Paper
===================================
Leave a Reply