Multiple Choice Questions on Mining
81- Full form of TNT
(A) Trinitro Toluene
(B) Total nitrogen test
(C) Total NONEL test
(D) None of the above
82- All operators of HEMM and tipper _______ before moving off from parked position
(A) Shall start machine
(B) Shall sound one horn
(C) Shall raise engine
(D) Shall shout
83- Permissible Peak Particle Velocity (PPV) due to blasting at the foundation level of structures in mining areas depend on ownership of building, type of structure and
(A) Dominant Excitation Frequency
(B) Velocity of Detonation
(C) Air Overpressure
(D) Noise of blasting
84- Which coal is more prone to spontaneous combustion?
(A) High thermal conductivity
(B) Low porosity
(C) With high pyrite content
(D) Anthracite coal
85- VOD is a term related to
(A) Air blast
(B) Explosive
(C) Exploder
(D) Blast vibrations
86- Schmidt Hammer Rebound Test is carried out in rock for determining _______.
(A) Shear strength
(B) Tensile strength
(C) Modulus of elasticity
(D) Uniaxial compressive strength
87- Productivity of a highly mechanized coal mine depends on
(A) % Availability of equipment
(B) % Utilisation of equipment
(C) % Manpower availability
(D) % Availability of equipment and % Utilisation of equipment
88- Factor of safety in slope stability analysis is a ratio between
(A) Mobilizing force to Resistive force
(B) Resistive force to Mobilising force
(C) Mobilising strain to Resistive stress
(D) Resistive strain to Mobilising stress
89- Factor of safety of slope of an opencast mine _______ with increase in pore water pressure.
(A) Goes up
(B) Reduces
(C) Remains unchanged
(D) Fluctuates
90- Unit of blast induced vibration is
(A) mm/s
(B) Pascal
(C) dB
(D) Nm
91- Testing of parking brake of a dumper is done
(A) On maximum gradient of haul road
(B) On level ground
(C) On parking area
(D) During idling
92- Decoupled charging results in
(A) Poor fragmentation but less vibration
(B) Better fragmentation but more vibration
(C) Better fragmentation and higher noise
(D) Better fragmentation and less vibration
93- Which of the following statement is more relevant related to fire-fighting?
(A) Foam extinguisher when directed against a fire, the foam spreads over the entire fire area covering or blanketing it, thus cutting oxygen supply.
(B) Wet foam layer produces a cooling effect to extinguish the fire.
(C) Foam extinguisher when directed against a fire, the foam spreads over the entire fire area covering or blanketing it, thus cutting oxygen supply; and Wet foam layer produces a cooling effect to extinguish the fire.
(D) Foam extinguisher is generally recommended for fighting electrical fire.
94- Safety leadership is function of competent person in a mine which includes
(A) Giving safety instructions at the beginning of shift
(B) Assuming the workers are aware of safety
(C) Machine operators are trained and know their job
(D) Asking subordinate look for the work
95- Departure from an accepted normal or correct procedure or practice is called as
(A) Mistake of understanding
(B) Non-obedience
(C) Unsafe act
(D) Using own wisdom
96- Accident is
(A) Unplanned and undesirable event
(B) Controllable incidence
(C) Expected mishaps
(D) Only destructive event
97- Write the full form of EDM
(A) Electronic Distance Measurement
(B) Electrical Detonating Machine
(C) Environment Damage Management
(D) Endangering Double Mine
98- Which of the following is not responsible for efficient breaking of rock?
(A) Correct type of explosive
(B) Correct amount of charge per hole
(C) Type of exploder
(D) Proper stemming
99- PVC belt possesses
(A) Fire resistant property
(B) Anti slippage property
(C) High co-efficient friction value than rubber belt
(D) High capacity of transportation
100- Which of the following factor is considered for calculation of cycle time of excavating machine?
(A) Swell Factor
(B) Bucket factor
(C) Swing Factor
(D) Drill factor
ANSWERS:
81-(A), 82-(B), 83-(A), 84-(C), 85-(B), 86-(D), 87-(D), 88-(B), 89-(B), 90-(A), 91-(A), 92-(D), 93-(C), 94-(A), 95-(C), 96-(A), 97-(A), 98-(C), 99-(A), 100-(C)