Description : Which type of welding is generally used in automobile sector? a) Electric arc welding b) Electric resistance welding c) Gas welding d) Forge welding
Last Answer : b) Electric resistance welding
Description : Thermit welding is categorised as the __________ welding. (A) Forge (B) Fusion (C) Resistance (D) Arc
Last Answer : (B) Fusion
Description : The electric arc welding is a type of ............. welding. (a) forge (b) fusion
Last Answer : b) fusion
Description : Chromium molybdenum steel cannot be welded using __________ welding. (A) Thermit (B) Electrical resistance (C) Oxy-acetylene (D) Any of these
Last Answer : Option B
Description : Consumable electrodes are used in the __________ welding. (A) Gas (B) Arc (C) Thermit (D) Resistance
Last Answer : (B) Arc
Description : Projection welding is (i) Electric arc welding (ii) Gas welding (iii)Spot welding (iv) None
Last Answer : (iv) None
Description : Among gas and electric arc welding, which has the higher rate of heating? a) Gas welding b) Electric arc welding c) Gas welding and electric arc welding have equal rate of heating d) Cannot be determined
Last Answer : b) Electric arc welding
Description : Projection welding & stud welding is categorised as the __________ welding. (A) Pressure (B) Thermit (C) Resistance (D) Arc
Last Answer : C) Resistance
Description : Stainless steel is welded using (A) Oxy-acetylene flame (B) Oxy-hydrogen flame (C) Arc welding (D) Inert gas arc welding
Last Answer : (D) Inert gas arc welding
Description : Forge welding involves heating of parts to elastic stage and joint is prepared by impact force. a) Yes b) No, it is done up to plastic stage c) Heating is done up to boiling point d) None of the listed
Last Answer : b) No, it is done up to plastic stage
Description : Rails used for A T Welding shall not normally be welded? (i) 20 years old . (ii) 30 years old (iii) 40 years old (iv) 50 years old*
Last Answer : iv) 50 years old*
Description : Which of the following mainly decides the current to be employed is arc welding? (A) Electrode size (B) Plate thickness (C) Voltage across the arc (D) Welded portion length
Last Answer : (A) Electrode size
Description : In gas welding which of the following is generally used? a) Oxygen-Hydrogen b) Oxygen-Acetylene c) Oxygen-Hydrogen or Oxygen-Acetylene d) None of the mentioned
Last Answer : c) Oxygen-Hydrogen or Oxygen-Acetylene
Description : Thermit welding uses the following energy source. (A) Electrical energy (B) Chemical energy (C) Energy of high velocity electrons (D) Heat generated by friction
Last Answer : (B) Chemical energy
Description : Filler material is used in electric resistance welding. a) Yes b) No filler material used c) Depends on the type of welding d) None of the listed
Last Answer : b) No filler material used
Description : The angle of V-welded joint in a pressure vessel 30 to 45 0 40 to 55 0 55 to 70 0 None
Last Answer : 55 to 70 0
Description : Lap welded joints are a. Rectangular b. Square c. Triangular d. None
Last Answer : c. Triangular
Description : Inspection of welded joints with respect to riveted joints is a. Difficult b. Easier c. Cannot say d. None
Last Answer : a. Difficult
Description : Appearance of welded structures with respect to riveted structures is a. Smooth b. Rough c. Same d. None
Last Answer : a. Smooth
Description : Welded structures with to riveted structures for a certain load are a. Heavier b. Lighter c. Same weight d. None
Last Answer : b. Lighter
Description : Welded joints require a. Punching of holes b. Drilling of holes c. Punching & Drilling of holes d. None
Last Answer : d. None
Description : Welded joints are a. Hinged joint b. Rigid joint c. Freely supported joint
Last Answer : b. Rigid joint
Description : Welded structures with respect to riveted joint is a. Weakened in tension b. Strengthened in tension c. No change in tension strength d. None
Last Answer : c. No change in tension strength
Description : Changes in a welded structure are a. Easier b. Difficult c. Easier & difficult d. None
Last Answer : a. Easier
Description : The strength of a welded joint with respect to a riveted joint is a. Greater b. Smaller c. Equal d. None
Last Answer : a. Greater
Description : The welded structure with respect to riveted structure is a. Heavier b. Lighter c. Same d. None
Description : Efficiency of a welded joint with respect to a riveted joint is a. Smaller b. Equal c. Greater
Last Answer : c. Greater
Description : Which welded joint used in the circumferential joint of a cylindrical pressure vessel is (i) Butt joint (ii) Lap joint (iii)Screwed joint (iv) None
Last Answer : (ii) Lap joint
Description : Welded joint used in the longitudinal joint of a cylindrical pressure vessel is (i) Butt joint (ii) Lap joint (iii)Screwed joint (iv) None
Last Answer : (i) Butt joint
Description : The advantage of a welded joint over a riveted joint is (i) Introduce residual stresses (ii) Requires highly skilled labor and supervision (iii) Lighter in weight (iv) None
Last Answer : (iii) Lighter in weight
Description : The name of the welded joint made by placing the plates edge to edge is (i) Fillet welded joint (ii) Butt welded joint (iii) Fillet-Butt welded joint (iv) None
Last Answer : (ii) Butt welded joint
Description : By overlapping the plates, which type of welded joint is made (i) Fillet welded joint (ii) Butt welded joint (iii) Fillet-Butt welded joint (iv) None
Last Answer : (i) Fillet welded joint
Description : Internal defects in a welded joint can be found by a process called (i) Tension test (ii) Visual inspection (iii) Radio graphing (iv) None
Last Answer : (iii) Radio graphing
Description : One which is applicable to a welded joint (i)Less rigidity (ii) Heavy (iii) Difficult process (iv) None
Description : Term which is not applicable to a welded joint (i) Higher efficiency (ii)Easy process (iii) Faster process
Last Answer : (ii)Easy process
Description : Type of welded joint which do not exit (i) Groove type (ii) Spot type (iii)Plug type (iv) Surface type
Last Answer : (iv) Surface type
Description : Out of the followings, which welded joint is more stronger (i) Butt joint (ii) Lap joint (iii)Screwed joint
Description : Double full fillet welded joint cannot be used for a plate thickness greater than i. 1/8” ii. 3/8” iii. 5/8” iv. None
Last Answer : iii. 5/8”
Description : Single full fillet welded joint cannot be used for a plate thickness greater than i. 1/8” ii. 2/8” iii. 3/8” iv. None
Last Answer : iii. 3/8”
Description : Circumferential welded joint fails by i. Longitudinal stress ii. Radial stress iii. Hoop stress iv. None
Last Answer : i. Longitudinal stress
Description : Longitudinal welded joint fails by Longitudinal stress Radial stress Hoop stress None
Last Answer : Hoop stress
Description : Lap welded joints used in circumferential joints because of ? i. High strength requirements ii. Low strength requirements iii. Low as well as high strength requirements
Last Answer : ii. Low strength requirements
Description : Why are butt welded joints longitudinal joints ? i. High strength requirements ii. Low strength requirements iii. Low as well as high strength requirements iv. None
Last Answer : i. High strength requirements
Description : Welded joint strength increases due to annealing by i. 6% ii. 10% iii. 14% iv. None
Last Answer : i. 6%
Description : Strength of a welded joint increases by radio graphing by i. 10 % ii. 12% iii. 15% iv. None
Last Answer : ii. 12%
Description : If a circular shaft is welded to the plate by means of circumferential fillet, then the shaft is subjected to torsional moment M. If throat of weld is t, then torsional shear stress is given by a) M/2πtr2 b) M/πtr2 c) M/4πtr2 d) None of the listed
Last Answer : a) M/2πtr2
Description : While calculating bending stress in the following welded joints which of the welds moment of inertia can be neglected? a) 1 b) None of the listed c) Both 1 & 3 d) Both 2 & 4
Last Answer : b) None of the listed
Description : A bracket is shown welded to a vertical column by means of two fillet welds. The bending stress induced in the welds can be given by a) My/I b) 2My/I c) My/2I d) None of the listed
Last Answer : a) My/I
Description : The following bracket is welded to the vertical column. The joint undergoes torsional stresses. a) True b) False
Last Answer : b) False
Description : The capacity of welded structures to damp vibrations is quite good. a) True b) False