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Below is the list of colors nominated as the favorite colors by students of class I. Determine the color which has frequency 9. red, blue, red, yellow, green, yellow, green, yellow, yellow, red, green, red, blue, red, yellow, red, blue, yellow, red, blue, blue, yellow, yellow, green, green
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 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 air quantities in m3/s circulated in the splits A and B respectively are
There are two huts of two brothers each on the opposites sides of a medium sized pond. Each brother has to use 12 stones in the pond to visit each other’s hut by crossing the pond. These stones are numbered serially using numbers one to twelve. A dragon fly is jumping on these stones as follows; every minute it jumps to the fifth stone from where it started. Thus if it jumps from the fourth stone it would go to the ninth stone, from the ninth stone it would go to the second stone and so on. Select the option that indicates the number of stones on which this dragon fly would be resting if it stops jumping at the 36th minute if it starts jumping from the stone that is numbered two.
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 are correctly matched? Places Famously Called In Rajasthan 1.Sri Ganga Nagar The food basket of Rajasthan 2.Dungarpur The gateway city of Rajasthan 3.Alwar The city of hills of Rajasthan 4.Banswara City of hundred islands of Rajasthan
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