ExamVeda
Login
Home

A centrifugal fan rotating at 500 rpm delivers 70 m3 s...

This question belongs to Mining Engineering Mine Ventilation
Mine Ventilation
?

A centrifugal fan rotating at 500 rpm. delivers 70 m3/s of air. If the speed is reduced to 200 rpm. the quantity of air delivered in m3/s will be

Answer & Solution
Correct Answer: Option C
Let's discuss the solution. Join the discussion
Examveda
Question posted by Examveda
Community

Join the Discussion

No comments yet Be the first to discuss this question.
Keep Learning

Related Questions on Mine Ventilation

The liquid employed in aneroid barometer.
A. Mercury B. Water C. Petrol D. None
The mechanical mixture of gases existing in a mine given off after explosion called
A. White damp B. Stink damp C. Black damp D. After damp
A Drager Gas Mask does not filter
A. Water vapour B. Nitrous fumes C. Carbon monoxide D. Carbon dioxide
The resistances of two splits A and Bare 0.35 Ns2m-8 and 0.05 Ns2m-8 respectively. The combined resistance of the shafts and trunk airways is 0.4 Ns2m-8. A booster fan is planned to be installed in split A to increase the quantity flowing through it. Assuming that the surface fan continues to operate at a constant pressure of 1000 Pa, the critical pressure of the booster fan in Pa is
A. 675 B. 875 C. 825 D. 625
More Related Questions on Mine Ventilation