Question 21. Pressure characteristic of a mine fan is given by, P = -0.06 Q2 + 400, where P is the pressure in Pa and Q the quantity in m3/s. The resistance of the mine is 0.19 Ns2/m8.The mine quantity in m3/s is

Question 22. Pressure characteristic of a mine fan is given by, P = -0.06 Q2 + 400, where P is the pressure in Pa and Q 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

Question 23. A 4.6 m wide vein dipping at 800 is mined by horizontal cut-and-fill stoping method. The fill is to be
placed in the stope along the length of 46 m and to a height of 3.0 m. If the specific weight of the fill
material is 15.86 kN/m3 and the porosity is 35%, under fully saturated conditionsthe mass of solids in saturated fill in tonnes is

Question 24. A 4.6 m wide vein dipping at 800 is mined by horizontal cut-and-fill stoping method. The fill is to be
placed in the stope along the length of 46 m and to a height of 3.0 m. If the specific weight of the fill
material is 15.86 kN/m3 and the porosity is 35%, under fully saturated conditionsthe volume of water in the fill in m3 is

Question 25. If 3 ≤ X ≤ 5 and 8 ≤ Y ≤ 11 then which of the following options is TRUE?

Question 26. Mahatama Gandhi was known for his humility as

Question 27. Velocity of an object fired directly in upward direction is given by V = 80 - 32 t, where t (time)
is in seconds. When will the velocity be between 32 m/sec and 64 m/sec?

Question 28. All engineering students should learn mechanics, mathematics and how to do computation.                      I                                     II                                           III                                 IV Which of the above underlined parts of the sentence is not appropriate?

Question 29. Select the pair that best expresses a relationship similar to that expressed in the pair: water: pipe::

Question 30. The Headmaster ___________ to speak to you. Which of the following options is incorrect to complete the above sentence?