Q.1

Water is useful for

  • running hydroelectric turbines
  • floating the boats and ships
  • providing steam for running locomotives
  • warming dwelling units
  • all the above.
Q.2

While calculating the average depth of annual precipitation in a catchment basin, importance to individual raingauge station is given in

  • Arithmetical method
  • Thiessen's mean method
  • Isohyetal method
  • both (a) and (b)
  • both (b) and (c).
Q.3

A volume of air at constant barometric pressure may be brought to dew point by

  • increasing the temperature
  • decreasing the temperature
  • neither (a) nor (b)
  • both (a) and (b).
Q.4

Pick up the correct statement from the following :

  • Central portion of a cyclone acts as a chimney through which air gets lifted
  • Cyclonic precipitation caused by a warm front is generally continuous
  • Convective precipitation generally occurs in the form of showers of high intensity in short duration
  • Greatest amount of orographic precipitation falls in the windward side of the barrier
  • All the above.
Q.5

Precipitation caused due to upward movement of warmer air as compared to surrounding air, is called

  • cyclonic precipitation
  • convective precipitation
  • orographic precipitation
  • none of these.
Q.6

Bernard's distribution graph is a plot of time on X-axis and

  • run off on the y-axis
  • total run off on the y-axis
  • percentage of total surface run off on y-axis
  • percentage of total surface run off during uniform time intervals on y-axis
  • none of these.
Q.7

A control meter is preferred to a weir because

  • it measures the discharge even in silt laiden streams
  • the velocity of approach of the channel increases above the control, and thus removes the silt completely
  • it is not damaged by floating debris
  • all the above.
Q.8

Pick up the correct statement from the following :

  • The amount of water retained on the surface of soil grains by molecular attraction, is known as pellicular water
  • The degree of resistance to movement of the pellicular water generally expressed by the surface tension
  • The pellicular water held in any soil, is called field capacity
  • The portion of the pellicular water absorbed by the root action of the vegetation, is called available moisture
  • All the above.
Q.9

For predicting floods of a given frequency, the best reliable method is

  • Unit hydrograph method
  • Gumbel's analytical method
  • California method
  • None of these.
Q.10

Pick up the correct statement from the following :

  • The throat of the section of a control meter is either rectangular or trapezoidal
  • The floor of the control meter throat is almost level
  • The floor of the expanding outlet of the control meter is given a steep slope
  • A properly designed control meter is associated with the phenomena of hydraulic jump
  • All the above.
Q.11

Phytometer method is generally used for the measurement of

  • interception
  • evaporation
  • transpiration
  • none of these.
Q.12

For predicting floods of a given frequency, the best reliable method is

  • Unit hydrograph method
  • Gumbel's analytical method
  • California method
  • None of these.
Q.13

Pick up the correct statement from the following :

  • The zone below water table, is called zone of saturation
  • The zone above water table, is called zone of aeration
  • The water which exists in the zone of saturation, is called ground water
  • Water in the zone of saturation, remains under hydrostatic pressure
  • All the above.
Q.14

If the axial length of a drainage basin iskm and its form factor is 0.the total area of the basin is

  • 205 sq. km.
  • 215 sq. km.
  • 225 sq. km.
  • 235 sq. km.
  • 245 sq. km.
Q.15

The efficiency of a pump may be taken as

  • 0.55
  • 0.60
  • 0.65
  • 0.70
Q.16

If the loss due to friction in pipes is 4 m, the total losses in strainer and bends may be taken as

  • 0.10 m
  • 0.20 m
  • 0.5 m
  • 1.0 m.
Q.17

Knowledge of hydrology is necessary for civil engineers for

  • designing and construction of irrigation structures
  • designing and construction of bridges and culverts
  • flood control works
  • all the above.
Q.18

The critical depth in a channel can be produced

  • by raising the bottom of the channel
  • by lowering the bottom of the channel
  • by decreasing the width of the channel
  • by increasing the width of the channel
  • both (a) and (c) of above.
Q.19

If the dew point is greater than 0°C

  • dew will be formed
  • frost will be formed
  • vapours will be formed
  • neither of these.
Q.20

The recurrence interval (R.I.) ofcm rain storm at a place is 5 years.

  • The place will definitely have 20 cm rain storm after every five years
  • The place may have 20 cm rain storm after every five years
  • The place may have 20 cm rain storm within a set of 5 years twice
  • None of these.
Q.21

Non-recording rain gauges

  • collect the rain whose volume is measured by means of graduated cylinders
  • collect the rain which is directly measured by means of graduated cylinders in centimetres of water depth
  • are generally used in hilly terrain
  • are cylindrical in shape.
Q.22

Precipitation caused due to striking of air masses with a topographical feature, is called

  • orographic precipitation
  • convective precipitation
  • cyclonic precipitation
  • none of these.
Q.23

An intense rain is falling at a uniform rate of 7.5 cm/hour for a period ofminutes on a basin whose areas ishectares. If the average infiltration capacity during the entire rain period is assumed to be 1.5 cm/hr, the maximum run-off rate based onminute peak percentage offrom distributing graph of the basin, is

  • 40 cumecs
  • 60 cumecs
  • 80 cumecs
  • 100 cumecs.
Q.24

The time required by rain water to reach the outlet of drainage basin, is generally called

  • time of concentration
  • time of overland flow
  • concentration time of overland flow
  • duration of the rainfall
  • none of these.
Q.25

A river is said to be of uniform section if in its section

  • a segment of a circle can be fitted
  • a parabolic section can be fitted
  • a rectangular section can be fitted
  • a trapezoidal section can be fitted
  • all the above.
Q.26

The earthen embankments constructed parallel to the river banks at some suitable distance for flood control, are known as

  • floods walls
  • river walls
  • levees
  • dikes
  • both (c) and (d).
Q.27

Discharge curve may be extended by logarithmic method if

  • cross section of river is uniform
  • river is broader and shallower
  • river is of any type
  • none of these.
Q.28

According to Thiem, the permeability of an aquifer may be obtained from the equation

  • all the above.
Q.29

Isohytes are the imaginary lines joining the points of equal

  • pressure
  • height
  • humidity
  • rainfall.
Q.30

Humidity refers to

  • temperature of the air
  • pressure of the air
  • moisture content of the air
  • volume of the air.
0 h : 0 m : 1 s