Mechanical Engineering
GATE ME Casting, Forming and Joining Processes PYQs
Build your understanding with focused practice from past exam papers.
Questions 31–40 of 51. Imported answers require independent review unless marked reviewed.
Question 13
Open questionMEMCQ1 markNeeds review
In a casting process, a vertical channel through which molten metal flows downward from pouring basin to runner for reaching the mold cavity is called
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 14
Open questionMEMCQ1 markNeeds review
Which one of the following welding methods provides the highest heat flux (W/m²)?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 15
Open questionMEMCQ1 markNeeds review
The fluidity of molten metal of cast alloys (without any addition of fluxes) increases with increase in
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 37
Open questionMEMCQ2 marksNeeds review
Match the following sand mold cast defects with their respective causes.
| Defect | | Cause |
|---|---|---|---|
P | Blow hole | 1 | Poor collapsibility |
Q | Misrun | 2 | Mold erosion |
R | Hot tearing | 3 | Poor permeability |
S | Wash | 4 | Insufficient fluidity |
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 50
Open questionMENAT2 marksNeeds review
The figure shows a pouring arrangement for casting of a metal block.
Frictional losses are negligible. The acceleration due to gravity is 9.81 m/s². The time (in s, round off to two decimal places) to fill up the mold cavity (of size 40 cm × 30 cm × 15 cm) is _____
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 51
Open questionMENAT2 marksNeeds review
A gas tungsten arc welding operation is performed using a current of 250 A and an arc voltage of 20 V at a welding speed of 5 mm/s. Assuming that the arc efficiency is 70%, the net heat input per unit length of the weld will be _____ kJ/mm (round off to one decimal place).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 52
Open questionMENAT2 marksNeeds review
The thickness of a sheet is reduced by rolling (without any change in width) using 600 mm diameter rolls. Neglect elastic deflection of the rolls and assume that the coefficient of friction at the roll-workpiece interface is 0.05. The sheet enters the rotating rolls unaided. If the initial sheet thickness is 2 mm, the minimum possible final thickness that can be produced by this process in a single pass is _____ mm (round off to two decimal places).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 12
Open questionMEMCQ1 markNeeds review
The type of weld represented by the shaded region in the figure is
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 13
Open questionMEMCQ1 markNeeds review
During solidification of a pure molten metal, the grains in the casting near the mould wall are
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 14
Open questionMEMCQ1 markNeeds review
Match the following products with the suitable manufacturing process
Product | Manufacturing Process |
|---|---|
P — Toothpaste tube | 1 — Centrifugal casting |
Q — Metallic pipes | 2 — Blow moulding |
R — Plastic bottles | 3 — Rolling |
S — Threaded bolts | 4 — Impact extrusion |
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer