Top 100+ Mechanical Fitter Interview Questions And Answers
Question 1. Define Valve?
Answer :
Valve is a Mechanical glide control element within the technique.
Question 2. What Are Types Of Valves?
Answer :
Gate Valve
Globe Valve
Ball valve
Butterfly Valve
Needle Valve
Plug Valve
Diaphragm Valve
Non-Return Valve
Knife Edge Valve
Drain Valve
Float Valve
Flush Bottom Valve
Pinch Valve
Pen Stack Valve and many others.
Mechanical Interview Questions
Question three. Explain The Valve Parts?
Answer :
Gate Valve – Body, Bonnet, Seat, Gate, Stem, Hand Wheel, Gland Bush, Gland Flange, Gland Bolt and Nuts. Hand Wheel lock nut.
Ball Valve – Body , End Piece , Ball , Stem , Seal , Seal Follower , Seat , Lock Nut , Handle Gland Packing , Gland Flange , Gland Stud and nut.
Globe Valve – Body , Bonnet , Seat , Plug , stem , Hand Wheel , Lock Nut ,Gland Packing , Gland Flange , Gland Stud and nut.
Butterfly – Body , Disc , Stem , Seat ring , Seat ring holder , Bush , End cover , Hand Wheel or Gear Box , Gland Bush , Gland Packing , Gland Flange , Gland Stud and nut.
Question four. What Are The Types Of Gaskets?
Answer :
CAF – Compressed Asbestos Fiber Filled Gasket
Semi Metallic Gasket
Metallic Gasket
Rubber Gasket
Teflon Gasket
Spiral Wound Gasket
RTJ – Ring Type Joint
Graphite Gasket
Impregnated Gasket
Graf oil Gasket
Question 5. What Is Gasket? Where It Is Used?
Answer :
It is sealing member between two flanges.
Uses:
Water Line, Gas Line, Air Line used CAF Gasket.
RTJ – High Pressure Line.
Chemical Line – Rubber Gasket and Teflon Gasket.
Steam Line – Semi Metallic, Metallic and Graphite.
Impregnated Gasket – Valve Sealing Gasket.
Spiral Wound – Steam Line.
Mechanical Engineering Interview Questions
Question 6. What Is Flange? Types Of Flanges?
Answer :
Flanges used to attach each lines (Fluid, Gas, Oil, Water….)
Thread Type Flange
Modified Flange
Weld Neck Flange
Slip On Flange
Goose Neck Flange
Socket Weld Flange
Stepped Flange
Spade Flange
Spectacle Flange
Blind Flange
Question 7. What Is Gland Packing? Uses Of Gland Packing?
Answer :
Gland packing is a Sealing member among two transferring components or stationary.
It is used for arrest the leak through shaft numerous lines.
Teflon Gland packing
Graphite Gland packing
Carbon Gland packing
Virgin PTFE Gland packing
Graf oil Gland packing
Machine learning Interview Questions
Question 8. What Are Prv And Psv?
Answer :
PRV (Pressure Relief valve) launch immoderate more than set factor, released fluid re circulated.
PSV (Pressure Safety Valve) released stress extra than set factor to secure the equipments.
Question 9. Give The Parts Name Of Psv?
Answer :
Body
Bonnet
Nozzle
Disc
Disc Holder
Stem
Blow down ring
Blow down ring lock screw
Spring Bottom Plate
Spring
Spring Top Plate
Control Screw
Lock Nut
Cap
Gasket
Electrician Assistant Interview Questions
Question 10. What Is The Use Of Spade, Spectacle, And Blind?
Answer :
SPADE- Give area between two flanges and give flow through the spade.
SPECTACLE – Combination of SPADE and BLIND and each choice accomplished in one flange.
BLIND – Used for close the line.
Question 11. What Is Ppe?
Answer :
PPE- Personal Protective Equipment
E.G.) Helmet, Boiler Shout, Safety Goggles, Safety Shoe, Gloves, Dust Mask and so forth...
Electrician Interview Questions
Question 12. What Is Heat Exchanger? What Are The Types Of Heat Exchanger?
Answer :
It is an Equipment to apply for Exchange the warmth(Cooling or Heating purpose)
Types:
Fixed Tube Heat Exchanger
Floating Tube Heat Exchanger
U Tube Exchanger
Plate Type Exchanger
Fin Fan Cooler Heat Exchanger
Bridge Lock Exchanger
Mechanical Interview Questions
Question thirteen. Explain The Following Valves Shell And Seat Testing?
Answer :
Ball Valve
Gate Valve
Globe Valve
Butterfly valve
Plug valve
Shell Test of above valves:-
Testing flange to be fixed on each sides. Pressurized one side underneath the valve partial open condition as consistent with the same old. Check the leakage via frame, Bonnet sealing area, Gland packing region.
Seat Test of above valves:-
Testing flange to be restoration on one aspect of the valve. Pressurized the valve beneath completely closed condition as in line with the same old. Check the leakage through Seat in contrary side. Follow the identical manner while checking the any other seat except Globe and Butterfly.
Question 14. What Are The Testing Mediums Used For Testing?
Answer :
Water, DM Water, Air, Kerosene, Oil, Soap water.
Question 15. What Is Steam Trap And Gas Trap?
Answer :
Steam entice using for removal of Water from Steam.
Gas trap using for elimination of water from gas.
Electrical Machines Interview Questions
Question sixteen. What Is The Use Of Vacuum Breaker?
Answer :
It is used to remove Vacuum (Air Bubbles) from Water line.
Question 17. What Is The Use Of Ejector?
Answer :
Ejector is used to create Vacuum for system.
Electric Power Generation Interview Questions
Question 18. Define Non Sparking Tools?
Answer :
Non Sparking gear used in Gas, Oil and Chemicals.
E.G. Brass hammer, Brass Wedge, Brass Spanner, Copper hammer, Copper rod , Brass rod , Brass chisel , Rubber hammer , Nylon hammer.
Mechanical Engineering Interview Questions
Question 19. What Is Strainer?
Answer :
Strainer is a control element to arrest dirt from flowing fluids.
Question 20. What Is Work Permit System?
Answer :
Work Permit is an Authority for doing work in a technique plant.
Types:
Cold Work Permit- Without Sparking, Without Heat and so on.
Hot Work Permit- With warmness (Grinding, Cutting, Welding).
Note: Two times most effective increase the permit after the regular valid of allow.
