Limited Departmental Competitive examination (LDC) examination (Water supply)
Categories: Interview questions and answers Indian Railway Recruitment Study
Limited Departmental Competitive examination (LDC) examination (Water supply)
1. Specific yield of well is
- Discharge per unit time
- Yield of well per metre of drawdown
- Velocity of water per unit time
- d)None of the above
Answer) Yield of well per metre of drawdown
2.While taking sample of water from well, sample is collected
- a)About 2 metre above the bottom of wel
- b) About 1 metre above the bottom of well
- c)About 1 metres below the bottom of well
- d) none of the above
Answer) About 1 metre above the bottom of well
3. While collecting sample of water from tap the
- Mouth of tap is heated for 5 minutes
- Mouth of tap is heated for 10 minutes
- c)Mouth of tap is not heated
- d)none of the above
Answer) Mouth of tap is heated for 5 minutes
4. Demand of water for passengers on railway station is
- a)10 litres per passenger
- b)15 litres per passenger
- c) 20 litres for passenger
- d) 25 litres per passenger
Answer) 25 litres per passenger
5. Peak hour demand of water is taken as ---------- times the average daily demand
- a)1.5
- b)1.9
- c)2.25
- d)2.75
Answer) 2.25
6. The spacing of tube wells should generally be more than ----------from the circle of influence
- a)10 metre
- b)50 metre
- c)100 metre
- d) 500 metre
Answer) 100 metre
7. The capacity of highest storage tank with efficient standby pump should be higher of the following figures
- a)1/4 the maximum water consumption in 24 hours
- b)1/3 the normal water consumption in 24 hours
- c)1/4 the normal water consumption in 24 hours.
- d) a or b
- e) b or c
- f) a of c
Answer) a or b
8. With regard to standard of quality of drinking water as laid down by Indian Railway , the requirement (desirable) limit of total dissolved solids should not be more than---------- mg/l
- a)200
- b) 300
- c) 400
- d) 500
Answer) 500
9. Chandigarh is a city which has roads generally parallel or perpendicular to each other. The ideal water supply system in such a city should be
- Dead and system
- Grid Iron system*
- Ring system
- Any of them
Answer) Grid Iron system
10. From distribution main of 40 mm size, number of service pipe of 15 mm size can be taken off are---------
- 3
- 6
- 10
- 12
Answer) 12