Mining Engineering - MN 2016 GATE Paper (Practice Test) - GATE MCQ

Fact: If it rains, then the field is wet.
Read the following statements:
(i) It rains
(ii) The field is not wet
(iii) The field is wet
(iv) It did not rain
Which one of the options given below is NOT logically possible, based on the given fact?

The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.

Q. 6 – Q. 10 carry two marks each.

Q.

Students taking an exam are divided into two groups, P and Q such that each group has the same
number of students. The performance of each of the students in a test was evaluated out of 200
marks. It was observed that the mean of group P was 105, while that of group Q was 85. The
standard deviation of group P was 25, while that of group Q was 5. Assuming that the marks were
distributed on a normal distribution, which of the following statements will have the highest
probability of being TRUE?

A smart city integrates all modes of transport, uses clean energy and promotes sustainable use of
resources. It also uses technology to ensure safety and security of the city, something which critics
argue, will lead to a surveillance state.
Which of the following can be logically inferred from the above paragraph?

(i) All smart cities encourage the formation of surveillance states.
(ii) Surveillance is an integral part of a smart city.
(iii) Sustainability and surveillance go hand in hand in a smart city.
(iv) There is a perception that smart cities promote surveillance.

Find the missing sequence in the letter series.
B, FH, LNP, _ _ _ _.

The binary operation ? is defined as a ? b = ab+(a+b), where a and b are any two real numbers.
The value of the identity element of this operation, defined as the number x such that a ? x = a, for
any a, is

Which of the following curves represents the function 

Q. 1 – Q. 25 carry one mark each

Q.

The differential of the equation, x² + y² =1, with respect to x is

If [A][B] = [I ] then

X⁴ +C is the general integral of

Sinh (x) is

Identify the correct statement.
NONEL is used for surface connection of the blast holes in order to

Identify the pattern of surface blasting given in the figure. The values of delay time, in ms,
are given against each blasthole.

Identify the initiation sequence which is NOT possible for surface blasting.

Parallel holes at right angles to the face with some holes uncharged are associated with the following shot hole pattern

Bieniawski’s Rock Mass Rating considers the parameters: RQD, spacing of joints, condition of
joints, ground water condition, and

The unruly crowd demanded that the accused be without trial.

Identify the uniaxial compressive loading condition from the following four Mohr circles.

Out of the given stress-strain curves, identify the rock type that is most prone to rock burst.

A longwall panel of width 120 m is extracted at a depth of 200 m. Critical subsidence is reached
when the panel length becomes 150 m. If the seam were to be worked at a depth of 300 m, critical
subsidence would be observed at a panel length, in m, of _______________

Important : you should answer only the numeric value

The support system followed along the goaf edge in a depillaring panel is

Which one of the following ropes CANNOT be an effective cable bolt?

In metalliferous mines, the sublevel interval does NOT depend on

Jack hammer does NOT contain

At the inlet of a mine roadway, the dry and wet bulb temperatures of air are 38⁰Cand 29⁰C,
respectively. At the outlet, the corresponding temperatures are 32⁰C and 29⁰C, respectively. The
process of heat transfer in the airway is described as

Underground coal mines are in principle ventilated by exhausting system, so that

Identify the WRONG statement.
Pit bottom air lock