A pump handling a liquid raises its pressure from 1 bar

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A pump handling a liquid raises its pressure from 1 bar to 30 bar. Take the density of the liquid as 990 kg/m³. The isentropic specific work done by the pump in kJ/kg is

1. 0.10
2. 0.30
3. 2.50
4. 2.93

Correct Option: D

Work done by pump = υ(p₂ – p₁)

=	(30 - 1) × 100
	990

= 2.93 kJ/kg