PSC Civil Engg: Hydrology Quiz 9

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Question 1

Ground water flows through an aquifer with a cross- sectional area of and a length of 1500m. Hydraulic heads are 300 m and 250 m at the ground water entry and exit points in the aquifer respectively. Ground water discharge into stream at the rate of . The corresponding hydraulic conductivity of this aquifer will be

• A3.5 m/day
• B4.5 m/day
• C5.0 m/day
• D5.5 m/day

Question 2

Which one of the following is a method of extending the length of record for a frequency curve at a station?

• ADouble Mass Curve method
• BThe Station year method
• CThiessen method
• DIsohyetal method

Question 3

Double mass curve are used

• ATo check on the consistency of precipitation records
• BAs basis for strom rainfall analysis
• CTo determine average rainfall over an area
• DTo indicate rainfall distribution

Question 4

A stilling well is required when the stage measurement is made by employing

• ABubble gauge
• BFloat gauge recorder
• CVertical staff gauge
• DInclined staff gauge

Question 5

What is the probable Maximum Precipitation (PMP)?

• AProjected Precipitation for a 100 year return
• Bmaximum Precipitation for all past recorded storm
• CUpper limit of rainfall, which is justified climatologically
• DEffective Precipitation water

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