Manufacturing Technology MCQs | Page - 1

Q. 1) and the rotor current I2 are zero at                    

Q. 2) If use auto transformer method starting to start an induction motor to replace star-delta method, then the required tapping on the transformer will be                    

Q. 3) The starting method for a 3-phase squirrel-cage induction motor which is inferior in view of poor starting torque per ampere of line current drawn is?

Q. 4) volts, I = 200 A, and the cross-sectional area of the weld bead is 30 mm2. Estimate the welding speed if the workpiece and electrode are made of (a) aluminum, (b) carbon steel, and (c) titanium. Use an efficiency of 75%.

Q. 5) Upon which of the following parameters does the current intensity in arc welding depend?

Q. 6) In which of the following welding processes we use two non-consumable electrodes?

Q. 7) Which of the following brazing process is good for mass scale joining?

Q. 8) For grey cast iron, which of the following welding methods is preferable?

Q. 9) Due to which of the following reasons, flux is not used in atomic hydrogen welding?

Q. 10) In resistance welding, between the electrodes, the nature of current and voltage parameters being used?