GATE 2023 AG – Question 22

Irrigation and Drainage Engineering · Irrigation Water Conveyance and Application Methods · 1 mark · Multiple choice

A drip emitter has mean discharge4 L/hour, operating pressure110 kPa and emitter coefficient.3. Identify its type.

Orifice
Long path
Pressure compensating
Disc

Practise this question in The GATE Grind →

Show answer and explanation

Correct answer: (A) Orifice

Explanation

Use $q=kH^x$ in the supplied units. The exponent is $x=\ln(4/.3)/\ln110\approx.551$,near the turbulent-orifice value.5. A pressure-compensating emitter instead has a small pressure exponent, and a laminar long-path emitter approaches1. Thus the intended type is **orifice, A**.

More Irrigation Water Conveyance and Application Methods questions

GATE 2022 AG Q28 – A 200 L/s stream diverted from a canal irrigates wheat for 8 hours. Conveyance efficiency…
GATE 2022 AG Q59 – A 70%-efficient sprinkler system irrigates16 ha maize, ET6 mm/day. It operates20 h/day…
GATE 2021 AG Q21 – A drip system has application efficiency90%,minimum/maximum/average emitter flows45/65/50…
GATE 2021 AG Q29 – A pump supplies80 L/s for 10 h to 2 ha. Root-zone depth 50 cm;gravimetric moisture…
GATE 2026 AG Q33 – A tubewell discharges 25\,m3/h for 10 h/day. Average irrigation depth is 80 mm and…
GATE 2026 AG Q65 – Water penetration depths at 16 equally spaced border-strip stations, in mm, are…

All Irrigation Water Conveyance and Application Methods questions →