Drip irrigation
Drip irrigation is one of the most efficient types of irrigation systems. The efficiency of applied and lost water as well as meeting the crop water need ranges from 80% to 90%
Answer and Explanation:
The parameter which affect the heat transfer coefficient in a heat exchanger are
- Viscosity of the liquid, thermal conductivity,density , specific heat
- Geometry of heat exchanger that length width and height of heat exchanger
- Velocity of fluids
- It also depends on the type of flow of liquid that laminar flow ,turbulent flow
Answer:
4.2
Explanation:
The "allowance" is the difference between the maximum shaft size and the minimum hole size.
maximum shaft = C +D = 8.5 +0.1 = 8.6
minimum hole = A -B = 4.8 -0.4 = 4.4
Allowance = 8.6 -4.4 = 4.2
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For an interference fit, the allowance is negative.
Answer:
the work required by a reversible pump operating with the same conditions, in kW is 16.39 kW
the isentropic pump efficiency is 78%
Explanation:
Given that;
m = 1.2 kg/sec
T = 50 degree Celsius { Vf = 0.001012 m^3/kg}
P1 = 1.5 Mpa
P2 = 15 Mpa
W-actual = 21 kw
W reversible = m*Vf (p2 - p1)
= 1.2 * 0.001012 * ( 15*10^3 - 1.5*10^3)
= 1.2 * 0.001012 * 13500
= 16.39 kW
the work required by a reversible pump operating with the same conditions, in kW is 16.39 kW
Isentropic Pump efficiency = W-reversible / W-actual
= 16.39 / 21 = 0.78
= 78%
the isentropic pump efficiency is 78%
Answer:
41.6 A
Explanation:
Total power drawn = 1200 W + 1450 W + 1146 W + 1196 W = 4992 W
Power P = IV
I = P/V
Where I is the rms current,
V is the voltage = 120 V
I = 4992/120 = 41.6 A