Eom 2 paper 16

76,The maximum air velocity at the face is?,

1.7 m/s,

3 m/s,

5 m/s,

7.5 m/s,

77,The maximum air velocity at the main haulage roads is?,

1.7 m/s,

3 m/s,

5 m/s,

7.5 m/s,

78,Air velocities in diesel locomotive sheds sholud not be less than?,

4 m/s,

2 m/s,

1 m/s ,

0.75 m/s,

79,If the quantity of air passing through airway has to be increased from 1200 cu.m/min to 2400 cu.m/min the effect of HP of fan is?,

8 times,

4 times,

2 times,

1/2 times,

80,If the velocity of the air is doubled then the water guage increased will be?

2 times,

4 times,

8 times,

1/2 times,

Ans: 1. 3. 4, 1, 2