Related Questions

Two plates of the same metal having equal thickness are to be butt welded with electric arc. When the plate thickness changes, welding is achieved by
A Adjusting the current
B Adjusting the duration of current
C Changing the electrode size
D Changing the electrode coating
In DC arc welding, if leads are arranged in work as Negative pole of the welding arc and electrode as Positive pole of the welding arc, the arrangement is known as
A Fusion
B Reverse polarity
C Forward welding
D Direct polarity
In spot welding, the distance between the nearest edge of the plate and centre of weld should be equal to
A d
B 1.5 d
C 3d
D 6d
The electrodes used in spot welding have a tip of
A Stainless steel
B Aluminium
C Copper
D Brass
The overlap of batten plates with the main members in welded connections should be more than (where t = thickness of the batten plate)
A 3t
B 4t
C 6t
D 8t
The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.
A 0.5
B 3
C 10
D 25
Spot welding এ electrode ব্যবহৃত হয়----?
A stainless steel
B Aluminum
C Copper
D Brass
In which type of welding a gas shield, a consumable electrode is used and the welding can be done in all positions.
A ARC welding
B Submerged ARC welding
C TIG welding
D MIG welding
Spot welding is used for welding
A Lap joints in plates having 0.025 mm to 1.25 mm thickness
B Lap joints in plates having thickness above 3 mm
C Butt joints in plates having 0.025 mm to 1.25 mm thickness
D Butt joints in plates having thickness above 3 mm
পাত-দূরত্ব d এবং ধারকত্ব C. এমন একটি সমান্তরাল পাত ধারকের পাত দুটির মাঝখানে d/2 পুরুত্ববিশিষ্ট একটি ধাতব পাত স্থাপন করা হলো। নতুন ধারকত্ব কত হবে? (A metal plate of thickness d/2 is inserted between the plates of a parallel plate capacitor with plate separation d and capacitance C. What is the new capacitance?)
A C/d
B C/2
C 4Cd
D 2c

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