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 : Holes for riveting purposes should be preferably made by (A) Cutting torch (B) Drilling (C) Punching (D) None of these
Last Answer : (B) Drilling
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 : Welded joints are a. Hinged joint b. Rigid joint c. Freely supported joint
Last Answer : b. Rigid joint
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 : Which type of joints is better when the product is subjected to large vibrations: welded or threaded? a) Welded b) Threaded c) Both have same results d) Depends on the magnitude of the vibrational force
Last Answer : a) Welded
Description : he transverse fillet welded joints are designed for (a) tensile strength (b) compressive strength (c) bending strength (d) shear strength
Last Answer : (a) tensile strength
Description : Which of the following reduces the stress concentration? a) Use of multiple notches b) Drilling additional holes c) Removal of undesired material d) Each of the mentioned
Last Answer : d) Each of the mentioned
Description : A flywheel connected to a punching machine has to supply energy of 400 Nm while running at a mean angular speed of 20 rad/s. If the total fluctuation of speed is not exceed to in kgm 2 is 1. 25 2. 50 3. 100 4. 125
Last Answer : 1. 25
Description : Flywheels are used in punching and shear operation. a) True b) False
Last Answer : a) True
Description : Changes in a welded structure are a. Easier b. Difficult c. Easier & difficult d. None
Last Answer : a. Easier
Description : Flywheel is used in (A) Punch press (B) Drilling machine (C) Surface grinder (D) Milling machine
Last Answer : (A) Punch press
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 : 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 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 : 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
Last Answer : (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 : 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 : 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 : Rails in the field are generally welded by using a) Thermit welding b) Gas welding c) Electric arc welding d) Forge welding
Last Answer : a) Thermit welding
Description : The capacity of welded structures to damp vibrations is quite good. a) True b) False
Description : The size of the weld in butt welded joint is equal to (a) 0.5 × Throat of weld (b) Throat of weld (c) 2 × Throat of weld (d) 2 × Throat of weld
Last Answer : (b) Throat of weld
Description : The parallel fillet welded joint is designed for (a) tensile strength (b) compressive strength (c) bending strength (d) shear strength
Last Answer : (d) shear strength
Description : In transverse fillet welded joint, the size of weld is equal to (a) 0.5 × Throat of weld (b) Throat of weld (c) 2 × Throat of weld (d) 2 × Throat of weld
Last Answer : (c) 2 × Throat of weld
Description : Keyed joints never lead to stress concentration on shafts. a) True b) False
Description : Within the external combination engine, a piston rod is usually connected to the cross head by means of....... A. Cotter joints B. Universal joints C. Knuckle joint D. Bearing
Last Answer : A. Cotter joints
Description : Cotter joints is used for transforming rotating torque. A. True B. False
Last Answer : B. False
Description : Cotter joints is used for transforming........... A. Axial compressive load B. Axial tensile load C. Axial tensile or compressive load D. Twisting load
Last Answer : C. Axial tensile or compressive load
Description : Cotter joints is connected two ......... roads. A. Co - axial B. Parallel C. Perpendicular D. Inclined
Last Answer : A. Co - axial