Related Questions

Which of the following statements are true/false?
1. No person shall be allowed to work in a mine on more than six days in any one week.
2. No adult employed above ground in a mine shall be required or allowed to work for more than nine hours in any day.
3. A person will not work for more than five hours continuously before he has had an interval forrest of atleast half an hour.
4. No adult employed below ground in a mine shall be allowed to work for more than eight hours in any day.
A pumping station in a mine has 4 pumps, P1, P2, P3 and P4 which are connected functionally in parallel configuration as shown in the figure. The individual reliability of the pumps P1, P2, P3 and P4 are 0.80, 0.90, 0.85 and 0.95 respectively. For an effective dewatering operation in the mine denoting system success, at least three pumps should be in operation. The reliability of the system is
Mine System Engineering mcq question image
A mine ventilation system consists of two splits A and B with resistances of 0.8 Ns2m-8 and 3.2 Ns2m-8, respectively as shown in figure. Trunk airways have resistance of 0.2 Ns2m-8. The main mine fan is generating pressure of 500 Pa.
Mine Ventilation mcq question image
The flows in the two splits are equalized by placing a booster fan in split B. Assume that the fan pressure does not change after installation of the booster fan. The size of the booster fan in Pa is
A mine ventilation system consists of two splits A and B with resistances of 0.8 Ns2m-8 and 3.2 Ns2m-8, respectively as shown in figure. Trunk airways have resistance of 0.2 Ns2m-8. The main mine fan is generating pressure of 500 Pa.
Mine Ventilation mcq question image
The air quantities in m3/s circulated in the splits A and B respectively are
Which of the following statements are true/false?
1. No person shall be allowed to work in a mine who has already been working in any other mine within the preceding ten hours.
2. The Central government has the power to constitute mining board for any group or class of mines, who enjoy the power equivalent to the certifying inspector.
3. The workers will be granted a certificate of fitness from certifying surgeon and it shall be valid only for a period of twenty four months.
4. Inevery mine where more than five hundred persons are employed, ambulances and stretchers need to be readily available.
Four mines A, B, C and D are located along a road as shown with production in Mt per year 1, 2, 1 and 3 respectively. In order to handle total coal produced. the ideal distance of a coal washery along the road from the mine A in Km is
Mine System Engineering mcq question image
The figure shows PV (pressure-volume) diagram of a mine ventilated by both natural means and an exhaust fan. The total ventilation energy is represented by
Mine Ventilation mcq question image
Pressure characteristic of a mine fan is given by. P = -0.06Q2 + 400. where P is the pressure in Pa and Q is the quantity in m3/s. The resistance of the mine is 0.19 Ns2/m8. An identical fan is installed in the mine to operate in series with the existing fan. The new mine quantity in m3/s is
Consider the following for the definition of principal employer under Inter-state Workmen Regulation Act, 1979.
1. It is the head of that office or department in any department of the government.
2. In a factory, the owner or occupier of the factory and where a person has been named as the manager of the factory under the Factories Act, 1948.
3. In a mine, the owner or agent of the mine and where a person has been named as the manager of the mine.
4. In any other establishment, any person responsible for the supervision and control of the establishment.
Which of the following statements are true/false?
1. No child shall be employed or permitted to work, in any factory for more than four and a half hours in any day and during the night.
2. A child who has completed his eighteenth year or an adolescent shall not be required or allowed to work in any factory unless he has a certificate of fitness is granted in the custody of the manager of the factory.
3. The period of work of all children employed in a factory shall be limited to two shifts which shall not overlap or spread over more than five hours each.
4. No female child shall be required or allowed to work in any factory except between 8 A.M. and 7 P.M.