Irrigation Engineering

51) The duty of water at the outlet is also known as

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outlet factor

52) When the water table is within the root zone depth and is detrimental to the plant life, the land is said to be

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water logged

53) Water present in the soil which cannot be removed except by heating is called

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hygroscopic water

54) Which of the following may lead to water logging of the fields?

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all the above

55) Effective rainfall for a crop may be defined as

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the portion of the rainfall which is utilized by crops

56) The time factor of a canal is defined as the ratio of

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the number of days the canal has run to the number of days of irrigation period

57) Consumptive use of a crop is defined as the

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total amount of water utilized by the crop for its evapo-transpiration requirements

58) The capacity factor of a canal is defined as the ratio of

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the mean discharge in the canal to the peak discharge

59) A climatic region lacking enough water for agriculture without artificial irrigation is called

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arid zone

60) The gross irrigation requirement is given by

Discuss in Comment

field irrigation requirement + conveyance losses

Subject Notes

Objective Box

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