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Canal drop or canal fall is needed construction in the canal bed.

Correct Answer: True
If the available natural slope is steeper than the bed slope of the canal, then this is adjusted by the construction of vertical falls or drops in the canal bed at suitable intervals. But such a drop will not be stable, therefore in order to maintain this drop a masonry structure is constructed. This is known as canal fall or canal drop.

Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m3, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is

Bed bars are used _______________ i. To serve as permanent reference marks ii. To correct alignment and theoretical bed levels of the canal iii. Helps in desilting the canal section during its maintenance Which of the following function of bed bars is/ are correct?

Consider the following statements. I. Possibility of combining some other structure with a fall eg. regulator, road bridge etc. II. Cutting and filling are required below and above the fall should not be necessarily equal. III. The command should not be reduced due to the lowering of F.S.L and the fall may be located below the outlets. Which of the following statement is correct for site selection of a fall?

Good 'Y' is the substitute for good 'X' if
1. A fall in the price of good X leads to the fall in the marginal utility of good Y.
2. A fall in the price of good X leads to the fall in the quantity purchased of good Y. Select the correct answer

Consider the following statements and choose the correct answer:
1. A direct proportionality exists between vapour pressure and the concentration of water vapour in the atmosphere
2. Relative humidity is an expression of the ratio of the actual vapour pressure of the atmosphere when saturated at the same temperature
3. A rise or fall in temperature with no change in vapour pressure will cause a drop or rise, respectively, in relative humidity
4. A rise or fall in vapour pressure with no change in temperature will be accompanied by a rise or fall, respectively, in relative humidity

Name the system, where water falls drop by drop just at the position of roots and water is delivered at or near the root zone of plants, drop by drop.

After fluidisation, the pressure drop in the fluid phase across the bed is _______ to the bed weight over unit surface of the bed cross section.

Parameters that describe the overall behaviour of the fluidized bed in the bubbling regime are: (i) minimum fluidization velocity, (ii) Pressure drop across the bed, (iii) Bed height increase, (iv) Particle elutriation.

A bed consists of particles of density 2000 kg/m3. If the height of the bed is 1.5 metres and its porosity 0.6, the pressure drop required to fluidise the bed by air is

A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m3) is to be fluidised by water (density 1000 kg/m3). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is