These fans are used to produce the general ventilation air current in a mine.

EM 322 QUIZ 3

Quiz
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Professional Development
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University
•
Easy
Elma Rapal
Used 2+ times
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
a. auxiliary fans
b. booster fans
c. main fans
d. both a and c
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All are advantages of installing main fans at the surface except:
a. accessibility
b. safety of fans
c. ease of installation
d. efficiency
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In this ventilation sysem, the fan inlet is open to the atmosphere and the fan outlet to the mine intake shaft.
a. exhaust system
b. blowing system
c. mine refrigeration system
d. natural draft
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
True or False. Where there is an increase in area, there is an increase in static pressure at the expense of the velocity pressure
a. True
b. False
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In this ventilation system, the fan inlet is open to the mine through the return shaft.
a. Blowing system
b. Exhaust System
c. mine refrigeration system
d. natural draft
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This ventilation system is preferred in Coal mine ventilation
a. exhaust system
b. Forcing System
c. mine refrigeration system
d. natural draft
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This is the airstream to be directed to the surface
a. static air
b. return air
c. intake air
d. exhaust gas
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