Question:
A 1.2 m diameter drum winding system is shown. One of the winding ropes will be replaced for the manwinding cage.
Consider the following:
1) A new rope is recapped once at least in every 6 months and a length of 2 m including existing capping is to be cut off from the rope before recapping.
2) The maximum life of a rope is 3.5 years and at least 2 rounds of rope should remain on the drum while the descending cage lands at the bottomost landing point.
3) No overwinding will take place during the maximum life of the new rope.
Neglecting the impact of fleet angle on the length of the rope, the minimum length, in m, of new winding rope is ____.(round off up to 2 decimals)
A 1.2 m diameter drum winding system is shown. One of the winding ropes will be replaced for the manwinding cage.
Consider the following:
1) A new rope is recapped once at least in every 6 months and a length of 2 m including existing capping is to be cut off from the rope before recapping.
2) The maximum life of a rope is 3.5 years and at least 2 rounds of rope should remain on the drum while the descending cage lands at the bottomost landing point.
3) No overwinding will take place during the maximum life of the new rope.
Neglecting the impact of fleet angle on the length of the rope, the minimum length, in m, of new winding rope is ____.(round off up to 2 decimals)
Consider the following:
1) A new rope is recapped once at least in every 6 months and a length of 2 m including existing capping is to be cut off from the rope before recapping.
2) The maximum life of a rope is 3.5 years and at least 2 rounds of rope should remain on the drum while the descending cage lands at the bottomost landing point.
3) No overwinding will take place during the maximum life of the new rope.
Neglecting the impact of fleet angle on the length of the rope, the minimum length, in m, of new winding rope is ____.(round off up to 2 decimals)
Updated On: Jul 18, 2024
Hide Solution
Verified By Collegedunia
Correct Answer: 313
Solution and Explanation
The correct answer is: 313.00 or 316.00 (approx)
Was this answer helpful?
0
0
Top Questions on Materials Handling
- Data for a centrifugal pump discharging water from a sump to the surface are given.
Head, m : 180
Discharge rate, m m3/hr : 320
Operating hours per day for 270 days in a year : 14
Operating hours per day for remaining 95 days : 20
Overall efficiency of the pumping system : 0.70
Specific weight of mine water, kN/m3 : 10.20
The annual electrical power consumption in GWh, due to pumping operation, is____(round off up to 2 decimals)- GATE MN - 2024
- Mining Methods and Machinery
- Materials Handling
Questions Asked in GATE MN exam
- A Bord and Pillar panel is developed at a depth of 250 m in a flat coal seam. The vertical stress gradient is 0.027 MPa/m. If the strength of a square pillar is 12.5 MPa, the extraction ratio of the pillar for a safety factor of 1.5, is____.(round off up to 2 decimals)
- GATE MN - 2024
- Room and pillar mining
- Water is pumped from a mine sump at the rate of 300 m3/hr to an inverted conical water tank, as shown. The rate of rise in water level in m/min, at the instant water level reaches at 5 m height from bottom of the tank, is____.(round off up to 2 decimals)
- GATE MN - 2024
- Levels and Levelling
- A mine worker weighing (W) 600 N lifts an object of 100 N as shown. The 50% body weight is applied downward through point A and a force FE is produced parallel to x axis by the contraction of erector spinae muscle during lifting. The lumber disc, L (shown by red box) acts as a smooth hinge and keeps the upper body in static equilibrium. Ignore all other forces in the body. The magnitude of the resultant of the reaction forces, in N at the lumber disc, is____.(round off up to 2 decimals)
- GATE MN - 2024
- Mechanization of Surface Mining
- In an opencast coal mine, blast vibrations are measured at two locations, A and B simultaneously for a maximum charge per delay (Q) of 1200 kg as given.\(PPV=K[\frac{D}{\sqrt{Q}}]^{-B}\)
Location Distance from the blast face, D (m) PPV (mm/s) A 100 112.5 B 300 20.3
where, K and ẞ are site constants. The PPV in mm/s, at a distance of 200 m from the blast face, is (round off up to 2 decimals)- GATE MN - 2024
- Ground Vibrations
- A solid ball of mass 10 kg is subjected to forces as shown. The magnitude of the acceleration in m/s2, is____.(round off up to 2 decimals)
- GATE MN - 2024
- Optimization of Facility Location
View More Questions