Question:
Quantity of air to be circulated to underground workings where \(150\) workers are employed in a largest shift and daily production is \(500\) t will be
Quantity of air to be circulated to underground workings where \(150\) workers are employed in a largest shift and daily production is \(500\) t will be
Show Hint
Mine ventilation quantity is the greater of
\[
\boxed{
6\ \mathrm{m^3/min\ per\ person}
\quad\text{or}\quad
2.5\ \mathrm{m^3/min\ per\ tonne/day}.
}
\]
Updated On: Jul 14, 2026
- \(900\ \mathrm{m^3/min}\)
- \(900\ \mathrm{m^3/s}\)
- \(1250\ \mathrm{m^3/min}\)
- \(1250\ \mathrm{m^3/s}\)
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Use the statutory ventilation requirements.
The minimum quantity of air is taken as the greater of:
\[
6\ \mathrm{m^3/min}
\]
per person, or
\[
2.5\ \mathrm{m^3/min}
\]
per tonne of daily production.
Step 2: Calculate both values. For \(150\) workers, \[ Q_1=150\times6=900\ \mathrm{m^3/min}. \] For \(500\) t/day production, \[ Q_2=500\times2.5=1250\ \mathrm{m^3/min}. \] Since the larger value is adopted, \[ Q=1250\ \mathrm{m^3/min}. \] Therefore, \[ \boxed{(C)} \] is the correct answer.
Step 2: Calculate both values. For \(150\) workers, \[ Q_1=150\times6=900\ \mathrm{m^3/min}. \] For \(500\) t/day production, \[ Q_2=500\times2.5=1250\ \mathrm{m^3/min}. \] Since the larger value is adopted, \[ Q=1250\ \mathrm{m^3/min}. \] Therefore, \[ \boxed{(C)} \] is the correct answer.
Was this answer helpful?
0
0
Top TS PGECET Mining Engineering Questions
- The angle, which the fault plane makes with the vertical plane is referred to as
- An overturned fold in which two limbs dip towards each other is named as
- Placer Gold deposits are mostly
- Kolar Gold Field (KGF) deposit is an example of
- Bauxite is
View More Questions
Top TS PGECET Mine Ventilation Questions
- Considering `I' as `intake' and `R' as `return', the ventilation symbol for the shaft-bottom air-lock in a coal mine is
- A panel in coalmine produces 400 tonnes per day. The number of persons employed in each of the three shifts is 110, 130 and 120. As per CMR, the minimum quantity of air that needs to be circulated at the last ventilation connection of the panel in m$^3$/minute is
- The purpose of rotating a whirling hygrometer in hygrometric survey is to
- Sum of static pressure and velocity pressure is known as
- Major source of heat in underground coal mines is
View More Questions
Top TS PGECET Questions
- If \( P = \begin{pmatrix} 1 & 1 & 1 \\ 0 & 1 & 2 \\ 0 & 0 & 1 \end{pmatrix} \) is the modal matrix of \( A = \begin{pmatrix} 1 & 1 & 0 \\ 0 & 2 & 2 \\ 0 & 0 & 3 \end{pmatrix} \) then the sum of all the elements of \( P^{-1}AP \) is
- If the system of equations \( kx + y + z = k - 1 \), \( x + ky + z = k - 1 \), and \( x + y + kz = k - 1 \) has infinite solutions, then \( k \) is
- The value of the integral \( \int_C (2xy - x^2) \, dx + (x^2 + y^2) \, dy \) where \( C \) is the boundary of the region enclosed by \( y = x^2 \) and \( y^2 = x \), described in the positive sense, is
- Let \( f(x) = \log x \). The number \( C \) strictly between \( e^2 \) and \( e^3 \) such that its reciprocal is equal to \( \frac{f(e^3) - f(e^2)}{e^3 - e^2} \) is
- The solution of the differential equation \( (D^2 + 2)y = x^2 \) is
View More Questions