Coal cutting machine ropes are . . . . . . . . wire rope core.
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Mining Machinery
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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
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The joining of ropes is termed as . . . . . . . .
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How many types of lay of ropes?
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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
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
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The ropes which under go frequent movement of coiling they are called . . . . . . . .
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The ratio between breaking load and total suspended load on rope called . . . . . . . .
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The haulage wire ropes are generally . . . . . . . .
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Rotation of impeller inside the pump forces water to enter in the suction pipe. This is effected due to
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Cowl is the component of
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Ropes of stainless steel not used in . . . . . . . .
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Figure shows a two pulley system for hoisting a load of 10 kN. The coefficient of friction between each pulley and the rope is 0.2. The vertical and horizontal distances between the centers of the pulleys are 25m and 16m respectively. The tensions T1 and T2 respectively in kN are
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If the track gauge of underground haulage is 0.6m, radius of curve 2m, Velocity of train 2m/sec, then find out the amount of super elevation.
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White metal temperature not exceeding °C during pouring.
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A conveyor is 600m long carrying coal having bulk density 0.8 t/m3 up a gradient of 1 in 60 at the rate of 220 t/hr. If the belt width (w) is 0.75m and cross-sectional area of the material is 0.1w2, determine belt speed?
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A cage weighing 12000 kg is raised by four chains each making an angle of 30° with the vertical. The tension in each chain in kN is
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In koepe winders, the power is transmitted through the friction between
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The object of normalising is to remove . . . . . . . .
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Corrosion of the rope can be delayed by using . . . . . . . .
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It is the ratio between resistance to the motion of a car along a straight level track with constant speed to the total weight of car
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