42451. The ratio of the head recovered to the head put in, is known as
42452. The level of the fioor of a syphon aqueduct can be obtained
42453. A fall which maintains its depth, is
42454. The water face of the guide banks, is protected by
42455. Effective precipitation for a crop may be defined as
42456. If average particle size of the silt in millimetres is m, the Lacey's silt factor f is proportional to
42457. Lane's weighted creep theory assumes
42458. Disposal of extra excavated earth of canals, is utilised to provide a spoil bank on
42459. If A is the area of the surface, x is the depth of its C.G. from the surface of the water and ω is the density of water, then
42460. The included angle in Acme thread is
42461. According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is
42462. The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than
42463. The field capacity of a soil depends upon
42464. Finally formed berms in canals are provided for
42465. An outlet is said to be proportional if its flexibility, is
42466. The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is
42467. For standing crops in undulating sandy fields, the best method of irrigation, is
42468. In a syphon aqueduct
42469. Choose the best suited type of screw thread for applications for stresses on threadsinone direction only
42470. Garnett's diagrams are used for graphical solution of design equations of a canal by
42471. A current meter measures the velocity of flow, if it is held
42472. In a concrete canal the approximate permissible velocity of water should not exceed
42473. Pick up the correct sequence of the part of a canal system from the following
42474. A counter berm is
42475. For diversion of flood water of rivers, the type of canal constructed, is
42476. To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls
42477. According to Lacey, in regime conditions
42478. Process of meandering is due to
42479. For cereal crops the most commonly adopted method of irrigation, is
42480. While deciding the alignment of a proposed canal taking off from a river at B, three alignments of approximately equal lengths are available. These cross a drainages at C1, C2 and C3 where drainage bed levels C1 > C2 > C3, you will provide at site C3
42481. The ratio of the rate of change of discharge of an outlet to the rate of change in level of water surface in a distributary at its normal depth, is known as
42482. Lacey's equation for calculating flood discharge in rivers, is
42483. The most suitable section of a lined canal, is
42484. To hold hydraulic jumps, baffle walls are provided in
42485. Borrow pits should preferably be located in
42486. Irrigation canals are generally aligned along
42487. The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of
42488. From coefficient of spring is defined as
42489. In a laminated spring,the various strips are made of different length for the following reason
42490. The diameter of shaft in any power transmission system is proportional to
42491. Excessive back and forth movement of the crankshaft is prevented by
42492. Piston pins are usually either a press fit in the rod or
42493. If no resistance is encountered by displacement,such a substance is known as
42494. The first Indian railway was laid in
42495. The weight of the rails depends upon
42496. Pressure coefficient is the ratio of pressure force to
42497. A stream line is defined as the line
42498. Minimum depth of ballast prescribed of B.G. trunk lines of Indian Railways, is
42499. Boxing of ballast is done
42500. Best ballast contains stones varying in size from
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