Mining Machinery — Part 2 MCQs with Explanations

Eimco Elecon is the correct answer to “Which of the indigenous firm do manufacture SDL& LHD in India”. This question is standard in competitive examination syllabi for Mining Machinery.

Quality is the correct answer to “The mass of a rope depends upon the . . . . . . . . of steel.”. This question is standard in competitive examination syllabi for Mining Machinery.

Battery loco is the correct answer to “Which of the following can be used safely right upto the face of coal mine”. This question is standard in competitive examination syllabi for Mining Machinery.

White metal is the correct answer to “In coned socket type capel the metal poured is . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

Zn is the correct answer to “Which metal is used for the purpose of capping of winding ropes”. This question is standard in competitive examination syllabi for Mining Machinery.

Langs lay is the correct answer to “Ropes used for drag line.”. This question is standard in competitive examination syllabi for Mining Machinery.

Langs lay is the correct answer to “The wire rope which offers better wearing surface and more resistant to bending fatigue called . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

These make less noise is the correct answer to “For AFC open-bottom pans are preferable to closed-bottom pans because”. This question is standard in competitive examination syllabi for Mining Machinery.

Preformed rope is the correct answer to “Preshaping the wires and strands in to exact helical positions, they assumed in the finished shape called . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

Running is the correct answer to “The ropes used for winding; haulage, coal cutting are the examples of . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

Crane is the correct answer to “Right hand ordinary lay wire rope construction is most useful for”. This question is standard in competitive examination syllabi for Mining Machinery.

196 is the correct answer to “A 1 tonne mine car travelling at a constant speed of 10 km/h collides with a stationary buffer and comes to rest. If the buffer spring stiffness is 200 kN/m, the maximum compression in the spring in mm is”. This question is standard in competitive examination syllabi for Mining Machinery.

0.11 is the correct answer to “Sillicon percentage in wire ropes . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

Parallel lay is the correct answer to “All the layers of wires have same pitch or length of lay called . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

vibration frequency is the correct answer to “The rate at which a machine component oscillates is called”. This question is standard in competitive examination syllabi for Mining Machinery.

rope splicing is the correct answer to “Method of joining two wire ropes permanently without using special fittings or attachments is known as”. This question is standard in competitive examination syllabi for Mining Machinery.

58.86 is the correct answer to “A direct rope haulage pulls 8 tubs loaded with coal through an incline of length 500 m having an inclination of 1 in 6. Consider the following additional data. Capacity of tub = 1.0 tonne. Tare weight of tub = 500 kg Hauling speed = 9 km per hour Coefficient of friction between wheel and rail = $$\frac{1}{{60}}$$ Coefficient of friction between rope and drum = $$\frac{1}{{10}}$$ Mass of rope per meter = 1.5 kg The minimum power required to haul the tubs in kW is”. This question is standard in competitive examination syllabi for Mining Machinery.

IWRC is the correct answer to “Which of the following centre core looks like an independent wire rope”. This question is standard in competitive examination syllabi for Mining Machinery.

Donga or pan is the correct answer to “The series of iron container of scraper chain conveyor over which the flight with chain moves is known as”. This question is standard in competitive examination syllabi for Mining Machinery.

Co-efficient of resistance is the correct answer to “It is the ratio between the interruptions to the motion of a car along a straight level track with constant speed to the total weight of car”. This question is standard in competitive examination syllabi for Mining Machinery.

Low is the correct answer to “The tensile strength of stainless steel is . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

Bernoulli equation is the correct answer to “The equation applicable to energy conservation in ideal fluid flow is . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

10 is the correct answer to “Suspension gear should be renewed after every . . . . . . . . years.”. This question is standard in competitive examination syllabi for Mining Machinery.

Direction of laying of wire rope is the correct answer to “'Lay' term is used in wire ropes to denote . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

Cralwer mounted is the correct answer to “Side discharge loader is a . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

upto 25 m of haul length is the correct answer to “What is the maximum suitable hauling distance for SDL to give best performance”. This question is standard in competitive examination syllabi for Mining Machinery.

Back stay is the correct answer to “The safety device which is fixed to the last tub of a set when tubs hauled upgradient”. This question is standard in competitive examination syllabi for Mining Machinery.

Bernouilli's theorem is the correct answer to “When a liquid flows through a passage of varying cross section, the total energy of the moving stream remains constant, assuming no friction losses called”. This question is standard in competitive examination syllabi for Mining Machinery.

Squirrel cage is the correct answer to “The coal drill essentially contains . . . . . . . . motor in FLP casing.”. This question is standard in competitive examination syllabi for Mining Machinery.

Volute casing is the correct answer to “Impellor of pump rotates rapidly within . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

2.5 is the correct answer to “Head gear pulleys of over . . . . . . . . m diameter are generally constructed in two halfs and bolted together.”. This question is standard in competitive examination syllabi for Mining Machinery.

Flexible is the correct answer to “Large number of wires in rope is more . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

Long splice is the correct answer to “The form of splice used on haulage ropes known as . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

Rate of flow is the correct answer to “The capacity of pump is also called as . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

3 - 7 km/hr is the correct answer to “The speed of the rope ranges between . . . . . . . . in endless rope haulage.”. This question is standard in competitive examination syllabi for Mining Machinery.

Loading apron is the correct answer to “In Road header machine the following component is employed.”. This question is standard in competitive examination syllabi for Mining Machinery.

Cage is the correct answer to “A lift suspended from the winding rope, open both ends, whose gates can be positioned called . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

Non cyclic is the correct answer to “Coal plough in employed on . . . . . . . . longwall face with a prop free front.”. This question is standard in competitive examination syllabi for Mining Machinery.

Plain carbon steel is the correct answer to “Wire ropes are made of . . . . . . . .”. This question is standard in competitive examination syllabi for Mining Machinery.

SERD is the correct answer to “There may be one ranging drum at one end of the machine known as”. This question is standard in competitive examination syllabi for Mining Machinery.