Mining Machinery MCQs Questions & Answers

1.
Coal cutting machine ropes are . . . . . . . . wire rope core.

A. Fibre

B. Steel strand core

C. Independent wire rope

D. All

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2.
Steel wire rope of 25mm diameter weighing 37N/m has 6 strands of 7 wires each. The diameter and tensile strength of each wire are 2.5mm and 1800 MPa, respectively. The factor of safety for raising a cage of weight 60 kN from a depth of 200m is

A. 5.60

B. 4.50

C. 4.25

D. 4.15

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3.
The joining of ropes is termed as . . . . . . . .

A. Rope stitching

B. Rope splicing

C. Rope Stretching

D. Rope volcanizing

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4.
How many types of lay of ropes?

A. 2

B. 1

C. 3

D. 4

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5.
The following characteristic curves (P, Q, R, S) pertain to rotary drilling in rock.

Title of the curve
I : Torque versus RPM
II: Rate of penetration versus uniaxial compressive strength of rock
III : Rate of penetration versus weight on bit
IV : Specific energy versus weight on bit
Match the curves with their titles

A. P-III, Q-IV, R-II, S-I

B. P-II, Q-IV, R-I, S-III

C. P-IV, Q-III. R-II, S-I

D. P-I, Q-III, R-II, S-IV

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6.
The ropes which under go frequent movement of coiling they are called . . . . . . . .

A. Standing rope

B. Running rope

C. Straded rope

D. Long rope

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7.
The ratio between breaking load and total suspended load on rope called . . . . . . . .

A. Fill factor

B. Factor of safety

C. Capacity factor

D. Bending factor

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8.
The haulage wire ropes are generally . . . . . . . .

A. Standing

B. Seven wire strand

C. Flattend

D. Locked coil

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9.
Rotation of impeller inside the pump forces water to enter in the suction pipe. This is effected due to

A. Reduction

B. Suction

C. Revolution

D. None of the above

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10.
Cowl is the component of

A. Road header

B. Shield support

C. DERDS

D. AFC

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Mining Machinery MCQs Questions & Answers | Mining Engineering

1. Coal cutting machine ropes are . . . . . . . . wire rope core.

Answer & Solution

2. Steel wire rope of 25mm diameter weighing 37N/m has 6 strands of 7 wires each. The diameter and tensile strength of each wire are 2.5mm and 1800 MPa, respectively. The factor of safety for raising a cage of weight 60 kN from a depth of 200m is

Answer & Solution

3. The joining of ropes is termed as . . . . . . . .

Answer & Solution

4. How many types of lay of ropes?

Answer & Solution

Answer & Solution

6. The ropes which under go frequent movement of coiling they are called . . . . . . . .

Answer & Solution

7. The ratio between breaking load and total suspended load on rope called . . . . . . . .

Answer & Solution

8. The haulage wire ropes are generally . . . . . . . .

Answer & Solution

9. Rotation of impeller inside the pump forces water to enter in the suction pipe. This is effected due to

Answer & Solution

10. Cowl is the component of

Answer & Solution

1.
Coal cutting machine ropes are . . . . . . . . wire rope core.

2.
Steel wire rope of 25mm diameter weighing 37N/m has 6 strands of 7 wires each. The diameter and tensile strength of each wire are 2.5mm and 1800 MPa, respectively. The factor of safety for raising a cage of weight 60 kN from a depth of 200m is

3.
The joining of ropes is termed as . . . . . . . .

4.
How many types of lay of ropes?

6.
The ropes which under go frequent movement of coiling they are called . . . . . . . .

7.
The ratio between breaking load and total suspended load on rope called . . . . . . . .

8.
The haulage wire ropes are generally . . . . . . . .

9.
Rotation of impeller inside the pump forces water to enter in the suction pipe. This is effected due to

10.
Cowl is the component of