Mining Engineering
GATE MN kind:question PYQs
Build your understanding with focused practice from past exam papers.
Questions 411–420 of 650. Imported answers require independent review unless marked reviewed.
Question 11
Open questionMNMCQ1 markNeeds review
The dry and wet bulb temperatures at the inlet of the airstream are 30 °C and 25 °C, respectively. The corresponding values at the outlet of the airstream are 26 °C and 25 °C, respectively. The psychrometric process that occurs in the airstream is described as
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 12
Open questionMNMCQ1 markNeeds review
For a mixture of inflammable gases, the lower and upper explosibility limits can be computed using
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 questionMNMCQ1 markNeeds review
The code for the lowest category of mineral resources under United Nations Framework Classification (UNFC) system 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 14
Open questionMNMCQ1 markNeeds review
Match the following sampling patterns with the corresponding sampling types.
Sampling patterns: P, Q, R, S
Sampling Pattern | Sampling Type |
|---|---|
P | 1 — Regular |
Q | 2 — Biased |
R | 3 — Stratified random |
S | 4 — Random |
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 questionMNMCQ1 markNeeds review
In the context of gas testing using flame safety lamp, the correct statement 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 16
Open questionMNNAT1 markNeeds review
For
in the range of [-3, 3], the maximum value for the function
is __________ (round off to 1 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 17
Open questionMNNAT1 markNeeds review
A rock sample has coefficient of thermal diffusivity 1.282×10⁻⁶ m²/s, specific heat 900 J/(kg °C) and density 2600 kg/m³. The coefficient of thermal conductivity of the rock sample in W/(m °C) is __________ (round off to 1 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 18
Open questionMNNAT1 markNeeds review
A random variable
has the following probability mass function. | 3 | 6 | 8 | 12 |
|---|---|---|---|---|
| 1/2 | 1/4 | 1/8 | 1/8 |
The expected value of the variable
is __________ (round off to 1 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 19
Open questionMNNAT1 markNeeds review
A random sample has five observations as shown below.
| 11 | 14 | 15 | 13 | 12 |
The coefficient of variation of the sample is __________ (round off to 3 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 20
Open questionMNNAT1 markNeeds review
Rock strata has unit weight of 25 kN/m³ and Poisson’s ratio 1/3. At a depth of 200 m, the horizontal stress in MPa is __________ (round off to 1 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 answer