Mining Machinery MCQs Questions & Answers | Mining Engineering Page-4 section-1

31.
Which of the following factor has little or no effect on the development of head?

A. Diameter and speed of impeller

B. Curvature of impeller

C. Design of diffuser

D. Distance between pump motor and delivery point

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32.
Clifton pulley is used in

A. Direct rope haulage

B. Endless rope haulage

C. Gravity is haulage

D. Main and tail rope haulage

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33.
A two tonne mine car is released from the top of an incline at a height of 3m as shown in the figure. The mine car travels 45m along the inclined track and another 85m along the horizontal track before coming to rest. The specific rolling resistance of the, car in N/tonne is

A. 0.226

B. 0.326

C. 0.526

D. 0.126

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34.
A wire rope, round stranded with fibre core, has a diameter of 2.54 cm. What is the mass of the rope per m length if the value of the constant k is 0.36?

A. 2.33

B. 2.36

C. 2.87

D. 3.21

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35.
A belt conveyor conveys material of average cross-sectional area of 0.09 m². of bulk density 1.5 tonnes/m³, at a speed 2 m/s. The carrying capacity of the belt in tonne/hr is

A. 972

B. 864

C. 732

D. 643

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36.
Which of the following device absorbs shock of the vibrations resulting form misalignment?

A. Clutch

B. Gear

C. Flexible coupling

D. Motor

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37.
The above figure shows the duty cycle of hoist system. The system is

A. Cylindrical drum with tail rope

B. By-cylindro conical drum

C. Ground mounted friction sheave

D. Cylindrical drum without tail rope

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38.
Water will not be delivered by a centrifugal pump due to

A. Lack of priming

B. Too low discharge head

C. Wrong direction of rotation

D. Partial obstruction at discharge

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39.
Which of the following locomotive is not recommended to be used where the coal is liable to spontaneous heating?

A. Battery loco

B. Diesel loco

C. Trolley wire loco

D. Compressed air loco

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40.
Tail rope haulage is mainly used as

A. Main rope haulage

B. Haulage for waste disposal

C. As a buffer haulage inside the district

D. To replace endless haulage

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Mining Machinery MCQs Questions & Answers | Mining Engineering

31. Which of the following factor has little or no effect on the development of head?

Answer & Solution

32. Clifton pulley is used in

Answer & Solution

33. A two tonne mine car is released from the top of an incline at a height of 3m as shown in the figure. The mine car travels 45m along the inclined track and another 85m along the horizontal track before coming to rest. The specific rolling resistance of the, car in N/tonne is

Answer & Solution

34. A wire rope, round stranded with fibre core, has a diameter of 2.54 cm. What is the mass of the rope per m length if the value of the constant k is 0.36?

Answer & Solution

35. A belt conveyor conveys material of average cross-sectional area of 0.09 m2. of bulk density 1.5 tonnes/m3, at a speed 2 m/s. The carrying capacity of the belt in tonne/hr is

Answer & Solution

36. Which of the following device absorbs shock of the vibrations resulting form misalignment?

Answer & Solution

37. The above figure shows the duty cycle of hoist system. The system is

Answer & Solution

38. Water will not be delivered by a centrifugal pump due to

Answer & Solution

39. Which of the following locomotive is not recommended to be used where the coal is liable to spontaneous heating?

Answer & Solution

40. Tail rope haulage is mainly used as

Answer & Solution

31.
Which of the following factor has little or no effect on the development of head?

32.
Clifton pulley is used in

33.
A two tonne mine car is released from the top of an incline at a height of 3m as shown in the figure. The mine car travels 45m along the inclined track and another 85m along the horizontal track before coming to rest. The specific rolling resistance of the, car in N/tonne is

34.
A wire rope, round stranded with fibre core, has a diameter of 2.54 cm. What is the mass of the rope per m length if the value of the constant k is 0.36?

35.
A belt conveyor conveys material of average cross-sectional area of 0.09 m². of bulk density 1.5 tonnes/m³, at a speed 2 m/s. The carrying capacity of the belt in tonne/hr is

36.
Which of the following device absorbs shock of the vibrations resulting form misalignment?

37.
The above figure shows the duty cycle of hoist system. The system is

38.
Water will not be delivered by a centrifugal pump due to

39.
Which of the following locomotive is not recommended to be used where the coal is liable to spontaneous heating?

40.
Tail rope haulage is mainly used as