Plumbing Interview Questions with Answers
Question: 1. Explain What Is The Primary Step To Unclog Any Blockage In The Pipes?
Answer:
First and primary technique to unclog the blockage is to pour warm water through the pipes. If the blockage still stays then, you want to use other options.
Question: 2. What Is Referred As Building Drain?
Answer:
The lowest factor in a drainage system in which the indoors drainage pipe meet and are conveyed into the sewer is referred as Building Drain.
Field Hygiene and Sanitation Interview Questions
Question: three. List Out Some Of The Most Common Tools Required For Plumbing?
Answer:
Adjustable pipe wrench
Faucet valve seat wrench
Faucet valve reseating tool
Faucet packing and washers
Tubing cutter
Teflon tape
Cup plunger
Flange plunger
Closet Auger
Sink Auger
Question: four. What Skills Does A Plumber Should Have?
Answer:
Problem solving
Critical wondering
Listening and being attentive to training
Decision making
Co-coordinating
Technical understanding associated with pipe becoming
Field Hygiene and Sanitation Tutorial
Question: 5. What All Tools Are Required To Unclog A Sink?
Answer:
Cup Plunger
Duct tape or wash fabric
Sink Auger
Channeled type pliers
Bucket
Mechanical Engineering Interview Questions
Question: 6. Mention What Are The Different Types Of Chemical Drain Cleaners Are Used?
Answer:
Caustic drain cleaners: It includes a substance like caustic potash; they’re bases and deliver electron to the clogging substance. This reaction will generate quite a few heat and dissolves the clogging substance, and clears the blockage.
Oxidizing drain cleaners: It consists of chemical compounds like family bleach, peroxides and nitrates. These chemical purpose the organic fabric of the clog to lose an electron and emerge as oxidized. It also generates warmness and fuel, which clears the blockage.
Acid drain cleaners: It includes a higher awareness of acid and the hydronium ions present in acid reacts with clogging substance and releases warmness. This warmness will dissolve the substance and clears the blockage.
Question: 7. What Is The Home Remedies To Clear Clogged Drain?
Answer:
The domestic treatments to clean clogged drain is
Take half a cup of baking soda and pour down the drain, and then pour 1/2 a cup of vinegar. After 15 minutes, flush out the drain with warm water
Add equal components of salt, vinegar and baking soda. After one hour pour warm water into it
Add half of a cup of salt and same amount of baking soda, sprinkle it into the drain and then flush it with hot water
Safety Officer Interview Questions
Question: eight. Explain What Is Angle Stop?
Answer:
Angle prevent is a shutoff valve between the water supply pipe and the fixture it components. It is used to shut off water to a fixture in case of failure, repair or leakage.
Question: nine. Mention What Are Some Health And Safety Issues That Plumber Face?
Answer:
Some of the health and safety chance that plumber face are
Exposure to a unsafe substance like lead, sulfur dioxide, mould, carcinogenic materials
Exposure to flammable and combustible substances
Working in awkward positions can also cause musculoskeletal injuries
Lifting heavy or awkward objects
Risk of eye damage from flying debris
Burns from hot gadget’s like steam traces, hot water heater, and many others.
Cut and bruises because of a sharp end of pipes
Risk of electrical shock even as digging beneath-floor water pipes
HVAC Interview Questions
Question: 10. What Pre-caution A Plumber Could Take For Health And Safety Purpose?
Answer:
Some of the fitness and safety risk that plumber face are
Exposure to a dangerous substance like lead, sulfur dioxide, mold, carcinogenic materials
Exposure to flammable and flamable substances
Working in awkward positions might also cause musculoskeletal accidents
Lifting heavy or awkward objects
Risk of eye damage from flying debris
Burns from hot gadget’s like steam strains, warm water heater, etc.
Cut and bruises due to a pointy quit of pipes
Risk of electrical shock even as digging below-floor water pipes
Question: 11. Explain What Is The Common Reason For Sump Pump Failure?
Answer:
Sump pump is usually used inside the basement place to do away with the accrued water at some stage in flood. Moreover, there are few purpose it could prevent working unexpectedly.
Switching trouble
Accumulation of excess particles, interfering with the switching
The pump can pass inside the basin, and that may intrude with the switching mechanism
Electrician Interview Questions
Question: 12. Explain How You Can Fix A Leaky Pvc Water Pipe?
Answer:
Drain the water out and make the leakage pipe dry
Now take a coupling, just like the size of the pipe this is leaking
Now cut the coupling into half of
Make sure that the half you going to apply need to have stop inner, as you have to slide the leakage pipe into it
Slather the interior of the patch with adhesive, make sure that you have sufficient of the adhesive on your patch, as that is the component that going to hook up with the leaked pipe.
Place the patch onto the pipe and slide it into vicinity and maintain it overnight to get dry
Field Hygiene and Sanitation Interview Questions
Question: thirteen. How Can You Avoid Bathroom Plumbing Maintenance?
Answer:
To avoid rest room plumbing maintenance you may use the following guidelines
Once per week flushes out the drainage pipes with hot water
Apply pipe guard to empty strains as soon as every month to hold cleaning soap scum building up and inflicting clogs
To save you similarly harm to the furniture and taps restore leaky taps
Showers and tubs should be fitted with strainers that could seize hair and soap chips
Use vinegar to take away mineral deposit to your shower head, through placing a vinegar in a plastic bag and depart it over the shower head overnight. Take handiest 1 cup of vinegar.
Throw the waste in wastebasket like tissue paper, cotton ball, and many others.
Question: 14. Explain What Is Pipe Dope?
Answer:
A pipe dope is a pipe joint that is used to create a watertight seal.
Question: 15. Explain What Is Eductor?
Answer:
Eductor is a device that makes use of a nozzle and throat, fitted in a circulate of water to construct a partial vacuum to draw liquid or air into the stream; commonly used to draw regeneration chemical compounds into an ion trade water remedy device, like deionizer or softener.
Fire Officer Interview Questions
Question: 16. Connect Sump Pump Outflow To Septic?
Answer:
It is illegal to attach any rain or ground water to the sewer. IF, but, you do hookup – at least placed a lure within the in the line to maintain sewer gas out of the residence.
Question: 17. Leak Somewhere In The Plumbing In My Shower/tub?
Answer:
I see this all of the time and nine instances out of ten its the grout or a bad pan under the bathe. Before anything else I try and determine if the leak is steady or if it is periodic. If it’s miles steady there is a good chance the leak is inside the pressurized water strains. Usually the leak is periodic so I even have a series of checks that I perform to song it down. Sometimes a short visible inspection of the tile will display that the grout is shot and is the most likely cause of the leak however I will often entire the relaxation of my assessments to make sure. What I do is first fill the bath 1/2 way and drain it.
This will tell me if it is in the drain pipe. For a shower with a lead or vinyl pan I block the drain and fill the base with water. This will inform me if the pan leaks. Then I do away with the bathe head and put a 1/2″ cap at the shower arm and turn on the pressure. This will inform me if there’s a leak in the pipe among the bathe valve and the shower arm. If no leak has shown up via then I tend to suppose the leak is water bleeding through the tile because of horrific grouting or that water is escaping the bathe and taking place thru flaws within the bathroom ground.
I can check this through taping up a plastic dropcloth inside the bathe overlaying all the tile paintings and having the client use the shower usually for a day or two. If the leak has suddenly disappeared then we comprehend it coming through the tile. A few cups of water on the ground will show a leak thru terrible tile or a cracked floor base.
Fire Detection Interview Questions
Question: 18. Can Clogged Vents Stop Up Drains?
Answer:
Yes and no. A bathroom with out a vent might not flush the contents out of the bowl, but another drain will paintings with out a vent. (NOTE: the code is that each one furniture shall be vented). Only two times in 15 years has the vents been the purpose of a drain backup. In one case it changed into roofers who crammed the old roofing cloth down the vents and the other became just a stray piece of wood. In both cases the cloth made its manner down into the drain pipe and needed to be removed. No amount of *vent cleaning* might have achieved any appropriate.
Mechanical Engineering Interview Questions
Question: 19. Leaking Bathtub Drain Right At The Drain Hole?
Answer:
It is replaced from the top, this is sitting inside the tub. Hopefully you have got *crosshairs* or multiple little *nibs* within the drain flange (the chrome part). That’s the component that unscrews. The device is referred to as a *pickle* – it has a fork at one give up and crossed slots at the other. Or a *dumbell* which is tapered and has crossed slots at each ends. Or simply use pliers and stick the handle quit down into the drain, trap the move hairs or nibs and unscrew. Clean off the antique plumbers putty. Slide a brand new washing machine between the underside of the bathtub and the *shoe* (component with girl threads) and placed putty across the chrome flange and screw it again in.
Question: 20. Do Unused Drains Dry Up And Get Rough Inside?
Answer:
Yes, drain pipes do dry out and get actual rough. Will it clear up with use? Maybe.
Mechanical Fitter Interview Questions
Question: 21. How Do I Get A Snake Down A Tub Drain?
Answer:
To get a snake inside the drain you are taking off the *overflow plate*. That’s the chrome element on the tub wall with two screws. When you pull it out – two sections of the stopper mechanism will include it. It’s hinged so it will bend through the hollow. Chances are that hair caught at the end of this mechanism is clogging the drain- you won’t even need to snake it. BTW – A snake will now not go through the drain hollow at the lowest of the tub.
Question: 22. When I Run The Cwm My Toilet Bubbles/overflows Or My Shower Overflows?
Answer:
The washing system line will be linked to close to the “suds rinse zone”, which means the washer waste ties into the waste or soil line of any other fixture to shut downstream from the hassle fixture. What is happening is the water is speeding via the suds at a high velocity, pushing in advance of the suds. Because the fixture is the nearest vicinity of alleviation, the suds will arise into the fixture, even a lavatory. The code calls for that a washing gadget, kitchen sink, shower, and dishwasher line be related as a minimum five’ downstream from any fixture department. This can be simply certainly one of many possibilities for the bubbling and backup.-Bill Dwight.
Question: 23. How Do I Know If I Have A Broken Water Line Outside My House?
Answer:
A damaged water line out inside the backyard might also consist of an overly excessive water bill, puddles in your yard or the sound of going for walks water when no taps or appliances are using water. Blue Mountain can pinpoint the hassle with out unnecessary trial and mistakes destruction of running pipes. In many instances we will restore the problem proper away and prevent cash.
Pipe Fitter Interview Questions
Question: 24. What Is The Most Common Reason For Sump Pump Failure?
Answer:
The main motive for sump pump to failure is usually a switching problem. Sometimes the pump can flow inside the basin. This motion reasons the go with the flow that operates the switch to inn in opposition to its facet. Debris can also be a element by using interfering with the motion of the pump switch. It is crucial to make sure that your pump transfer and float arm meeting flow freely.
The primary aspect to recall approximately sump pumps is that they don’t remaining for all time…even if you never use them. Internal component wear out and lead them to absolutely vain while you want them maximum! Blue Mountain can check, preserve or replace any emblem of sump pump. For flood-susceptible regions and houses that get water seeping in on a normal foundation you may need to remember a sump pump lower back up system. There are even non-electric powered structures that work inside the case of a electricity failure. Call Blue Mountain for greater information.
Safety Officer Interview Questions
Question: 25. Sealing The W/c Tank To The Bowl?
Answer:
Get the great effects through the usage of the big donut gasket of the sort that is rectangular reduce inside to in shape the form of the nut on the bottom of the tank. Sealant will now not help. Tighten the bolts down evenly to the factor in which the tank is cushty at the bowl. Over tightening will smash the bowl and/or tank.
Question: 26. High Pressure Makes My Toilet Run (with New Ballcock)?
Answer:
If your water pressure is so excessive that it leaks past a Fluidmaster 400A or every other new ballcock (aka: “toilet fill valve”) – then you NEED a pressure lowering valve. Other water pipes, connectors, clothes washing system hoses and your water heater may want to leak or wreck. Best to get a strain regulator if your stress to the house is extra than 60 kilos (80 is code at some stage in most of the U.S.).
Question: 27. Toilet Leaks At Base In Moved Toilet Location Or New Floor Install?
Answer:
Is the top of the flange even (or near even) with the completed ground? If it to low – then use wax earrings. One normal wax ring on the bottom and one (or more) with the plastic horn insert on pinnacle. ) I even have seen leaks such as you describe if the glued flange isn’t really glued in all the manner. Take a observe that – if your floor and flange is flush. Sometimes you want to shim the toilet if the ground is choppy or the flange is to high.
HVAC Interview Questions
Question: 28. Explain Low Flush Toilet Problems?
Answer:
You may buy a better flushing toilet for your situation. Some air assisted toilet flush well. When the low gallonage gravity lavatories first came out I replaced a couple of recent Kohler Wellworth Lites with the Am.Std. Air help toilet with exact outcomes. That became then and this is now. Today maximum manufacturers of gravity bathrooms flush well (together with the redesigned Kohler Wellworth fashions). Power assisted bathrooms have a tendency to be noisy and frankly, nowadays I clearly do no longer suggest electricity assisted toilets.
By the cease of 1999 (most brands of U.S. Made) gravity bathrooms synthetic had been flushing first-class. At the stop of 2000 my guess is that over eighty five% of one.6gpf bathrooms flushed well.
Question: 29. What Is Gas Hwt Height?
Answer:
Gas HWT have to be as a minimum 18″ off the floor because combustible fumes *sink* and for air consumption.
Question: 30. On Demand Hot Water System?
Answer:
The relative electricity performance of these systems relies upon a lot on different factors such as the quantity of heat loss from a more traditional garage tank gadget or the length of time hot water is stored before it is used. In practice they require a good deal more power per quantity of heated water than conventional systems and that they cannot normally offer enough warm water for multiple fixture at a time. The conventional garage tank kind of water heater can be quite efficient if the tank and the hot water pipes are well insulated.
The on-call for type warmers have their uses in the proper situation. I have discovered them sensible and efficient in situations in which hot water is used only from time to time together with in some save situations or where a fixture is at a widespread distance from a traditional garage tank water heater, which includes in a visitor house or pool residence. They can also be handy in case you are including warm water to a shape that has been cold-water-simplest and the cost or inconvenience of adding a whole hot water piping device could be prohibitive.
Question: 31. If I Have Need Rooter Service, Do I Have To Call One Of Those National Rooter Chains?
Answer:
No. We could propose which you name a qualified, skilled and licensed plumber. Why? The water pipes inside and outside your private home may be very delicate. In an older domestic, pipes wear skinny from the interior out making them seem sound but in fact are very brittle. An unqualified and unskilled rooter employer could motive substantial harm to your pipes and your own home.
The fantastically educated and licensed technicians at Blue Mountain will make the effort to correctly diagnose the trouble and make use of the right tools and strategies to resolve the trouble. Should there be an difficulty of a damaged pipe or different unforeseen issues after we start the activity, our expert plumbers can at once take movement. Can the opposite guys? We’re not positive…and we don’t advise which you take a threat.
Question: 32. Is There Really A Difference Between Hard Water And Soft?
Answer:
Yes. In truth, the difference can be detrimental to your own home and your body. Maybe you have got experienced broken clothing from the laundry, excessive cleaning soap consumption, pipe scaling, faucet and fixture deterioration, pores and skin problems, or unwanted tastes or odors from your water. If you’ve got, then you have a water hassle. Call Blue Mountain for professional advice on all styles of water treatment structures.
Question: 33. Explain Conventional Water Heaters Vs. Tankless Water Heaters?
Answer:
Conventional water warmers are by a ways the most commonplace sort of water heater within the U.S. Today. They variety in length from 20 to eighty gallons (or larger) and are fueled by using energy, natural gas, propane, or oil. Called ‘garage’ units, these water heaters switch warmth from a burner or coil to water in an insulated tank. The down facet to a conventional water heater is that strength is ate up even when no warm water is being used.
Tankless water heaters do no longer include a storage tank like conventional water warmers. A gasoline burner or electric powered element heats the water handiest when there’s a call for for decent water.
Electrician Interview Questions
Question: 34. Water Heater Maintenance?
Answer:
Turn off electric power or gasoline before doing anything. Damage will end result if element comes on when tank is dry. Turn of water supplying HWT. Note that a time switch is NOT a safe place to show off the electricity! Do it from the circuit breaker, or pull the fuse.
Drain the water heater (HWT). After HWT is tired, and hose is still attached, open and close the inlet valve a few instances to assist flush the sediment out. Do this ‘until the water comes out clear. You might also need to dismantle the valve, if there are huge chunks of scale coming loose.
Remove the sacrificial anode, which looks like a plug inside the pinnacle of the HWT. Inspect; it have to be nearly as long as the water heater. Replace if any portion of it’s far thinner than approximately 1/four”;.
With anode out, shine flashlight internal of tank to look at for rust. If you see plenty of rust, it’s probably time to update it…Earlier than it fails. Water heaters are typically glass- or ceramic-lined to save you corrosion; that is also what the anode’s for. The warmth of the water quickens corrosion, once it starts offevolved.
Open up the detail get right of entry to panels. Disconnect one wire from each of the elements. With a volt-ohm-meter, take a look at to see that each factors are nonetheless functional (the resistance across the terminals ought to be ??? Ohms, but in case your meter peaks out with fantastically high ohms, it is time to replace the detail).
Question: 35. What Is Moen Faucet Repair?
Answer:
Moen faucets have cartridges that may be replaced. There is a clip (on top) that needs to be pulled up and out before the cartridge may be changed. Often it appears stuck as though it’ll now not pop out. Some alternative cartridges offer a plastic rectangular to turn the cartridge within the valve frame 1/4 flip. This breaks it free from the valve grease that it’s miles stuck in. If, after replacing the unit ,the recent and cold are reversed, re-set up with the cartridge grew to become a hundred and eighty stages.