Mining Engineering
2020 · Paper 1
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Complete GATE MN 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 61–63 of 65. Imported answers require review unless explicitly marked reviewed.
Question 51
Open questionMNNAT2 marksNeeds review
A steel cube of side 50 mm is subjected to a uniform pressure of 200 MPa acting on each face. The Young’s modulus and Poisson’s ratio of the material are 200 GPa and 0.25, respectively. The decrease in the side of the cube in mm is ________ (round off to 3 decimal places).
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In the figure shown below, the friction coefficient between the block and the inclined plane is 0.2, and all the pulleys are weightless. The weight of the block is 10 N. The minimum force P in Newtons that is needed to slide the block up the inclined plane is ________ (round off to 2 decimal places).
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 53
Open questionMNNAT2 marksNeeds review
An assignment problem is given below with the cost of assignment as shown.
Group | T1 | T2 | T3 | T4 |
|---|---|---|---|---|
G1 | 6 | 10 | 5 | 4 |
G2 | 4 | 100 | 6 | 4 |
G3 | 6 | 9 | 6 | 2 |
G4 | 3 | 7 | 6 | 4 |
If only one task can be assigned to one group, the minimum cost of assignment is ________.
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