OBSERVATION

Formulaes

$H = {(P \times 10) + (P_{v} \times 0.0136)} m$

$Q = C_{d} \times A_{1} \times A_{2} \times \sqrt{\frac{2 g h}{{A_{1}}^{2} - {A_{2}}^{2}}} \times m^{3} / uc$

$IP = \frac{{wQH}_{}}{1000_{}} KW$

$OP = \frac{V \times l}{(η_{T} \times η_{A} \times 1000)} KW$

$η = \frac{OP}{IP} \times 100%$

$Ns = \frac{N \sqrt{P}}{H^{5 ⁄ 4}}$

Provided Data

Coefficient of discharge (Cd) = 0.62
Orifice diameter (d₂) = 100 mm
Orifice inlet diameter (d₁) = 153 mm
Transmission Efficiency (η_T) = 0.75
Alternate efficiency (η_A) = 0.75

Observation Table (constant Head)
S. No.	N (RPM)	P (Kg cm²)	Pv (mm of Hg)	Orifice Meter Head			Power Output
				h₁ (mm of Hg)	h₂ (mm of Hg)	h (m of Water)	V (Volts)	I (ampere)
1.
2.
3.
4.
5.

Calculate Table
S. No.	Total Head H (m)	Q (m^3/s)	Input Power (kW)	Output Power (kW)	Efficiency (%)	Ns (RPM)
1.
2.
3.
4.
5.

Result Table
S. No.	Total Head H (m)	Q (m^3/s)	Input Power (kW)	Output Power (kW)	Efficiency (%)	Ns (RPM)
1.	5	0.032	1.56	0.00906	0.58	160.77
2.	5	0.032	1.56	0.42	26.92	148.48
3.	5	0.032	1.56	0.73	46.72	136.65
4.	5	0.032	1.56	0.96	61.53	129.09
5.	5	0.032	1.56	1.2	76.9	102.76

Observation Table (constant RPM)
S. No.	N (RPM)	P (Kg cm²)	Pv (mm of Hg)	Orifice Meter Head			Power Output
				h₁ (mm of Hg)	h₂ (mm of Hg)	h (m of Water)	V (Volts)	I (ampere)
1.
2.
3.
4.
5.

Calculation Table
S. No.	Total Head H (m)	Q (m³/s)	Input Power (kW)	Output Power (kW)	Efficiency (%)	Ns (RPM)
1.
2.
3.
4.
5.

Result Table
S. No.	Total Head H (m)	Q (m^3/s)	Input Power (kW)	Output Powerv(kW)	Efficiency (%)	Ns (RPM)
1.	5	0.032	1.56	0.00906	0.58	160.77
2.	5.5	0.034	1.83	0.56	30.6	149.68
3.	6.5	0.036	2.29	1.23	53.71	132.05
4.	7.5	0.038	2.79	1.94	69.53	118.6
5.	8.5	0.039	3.25	2.5	76.42	107.94