Hydro-electric impulse turbine is directly coupled to a 24 pole, 60Hz alternator. It has a specific speed of 60 rpm and develops 3000 Hp. What is the required diameter assuming a peripheral speed ratio of 0.45.

The water velocity of a 5m x1m channel is 6m/s. What is the annual energy produced ifthe net head is 20m and the over-all efficiency is 80%?

A pelton type turbine has a gross head of 40 m and a friction head loss of 6m What is the penstock diameter if the penstock length is 90m and the coefficient of friction head loss is 0.001 (Morse).

A hydro-electric power plant consumes 60,000,000 kW-hr/vear. What is the net head if the expected flow is 1500 m3/min and over-all efficiency is 63%.

IN a hydraulic plant, the difference in elevation between the surface of the water at intake and the tallrace is 650 ft when the flow is 90 cfs, the friction loss in the penstock is 65 ft and the head utilized by the turbine is 500 ft. The mechanical friction in the turbine 110 HP, and the leakage loss is 4cfs. Find the hydraulic efficiency.

A gas turbine power plant operating on the brayton cycle delivers 15 MW to a standby electric generator. What is the mass flow rate and the volume flow rate of air if the minimum and maximum pressures are 100 kPa and 500 kPa respectively, and temperature of 20C and 1000C.

In air standard brayton cycle, the inlet temperature and pressure are 20C and 101.325kPa. The turbine inlet condition is 1200 kPa and 900C. Det the air flow rate if the turbine produces 12 MW.

An ideal gas turbine operates with a pressure ratio of 10 and the energy input in the high temperature heat exchanger is 300 kW. Calculate the air flow rate for a temperature limits of 30C and 1200C

Kerosene is the fuel of gas turbine plant: fuel air ratio, m0.012, T;=972K, pressure ratio r.=4.5, exhaust to atmosphere. Find the available energy in kJ/kg air flow. Assume k=1.34 and Ср 1.13.

In an air standard brayton cycle, the compressor receives air at 101.325 kPa, 21C and it leaves at 600ka at the rate of 4kg/s. Det the turbine work if the temperature of the air entering the turbine is 1000C.

The break thermal efficiency of a 1MW diesel electric plant is 35%. Find the heat generated by fuel in kW if generator efficiency is 89%.

A 305 mm x 457 mm four single acting diesel is rated at 150 kW at 260 pm. Fuel consumption is at rated load 0.26 kg/kW-hr with a heating value of 43,912 kJ/kg. Calculate the brake thermal efficiency.

Find the length of a suspension bunker to contain 181 tons of coal without surcharge, width of 4.6 m; depth of 4.3 m. The level capacity of a suspension bunker is 5/8 wdL. Density of coal is 800 kg/m°.

Calculate drive horsepower forpumping 1703 L/min vold water to a tank suction at 127 mm Hg vacuum, delivery at 5.3 kg/em2 ga., both measured close to pump, ep=0.65.

A 4kg air enters a turbine with enthalpy of 600KJ and velocity of 250 m/s. The enthalpy at ecit is 486 KJ and velocity of 170m/s. What is the work developed if there is a heat loss of 10KJ?

A 6MW steam turbine generator power plant has a full-load rate of 8 kg/kW- hr. Assuming that no load steam consumption as 15% of full-load steam consumption., compute the hourly steam consumption at 75% load in kg/hr.

Two protons, each of charges 1.6 x 10-1 coulomb, are 3.4 micrometers apart. What is the change in potential energy of the protons if they are brought 63 nanometers closer together?

What is the flow rate through a pipe 4" in diameter carrying water at a velocity of 11 ft/sec?

A single acting compressor has a volumetric efficiency of 87%, operates at 500 pm. It takes in ammonia at 277 kPa and discharges it at 1204 kPa. The ammonia handled is 4.13 m'/min measured at the discharged condition. If the compression is polytropic with n=1.20, determine the piston displacement per stroke.

A vapour compression refrigeration system is designed to have a 80 tons refrigerating of refrigeration. Its actual COP is 4 and 230 percent of the power supplied to the compressor is lost in the form of friction and cylinder losses. Determine the condenser cooling water required for a temperature rise of 10 °C.

A refrigerant machine that is classified as a one-ton machine has the capacity to produce a cooling effect of:

Determine the sp.heat weight of air at 760 mmHg absolute and 22C?

Ans. C A heat engine has a thermal efficiency of 50%. How much power does the engine produce when heat is transferred at a rate of 109 ki/hr?

The condenser of a reheat power plant rejects heat at the rate of 600 kW. The mass flow rate of cooling water is 5 kg/s and the inlet cooling water temperature is 35C. Calculate the condenser cooling water exit.

Determine the quality of steam in a vessel containing 2 kg of saturated vapour and 8 kg of saturated liquid.

10 kg/s of steam enter the turbine with an enthalpy of 3200 kJ/ kg and enter the condenser with an enthalpy of 2500 kJ/kg in a rankine cycle. If the turbine eff is 80% and the generator eff is 90%, determine the power plant output.

Compute the humidity ratio of air at 70% relative humidity and 25C when the barometric pressure is 101.325 pa. From steam tables: Psat at 34C=3.168 kPa.

The thermal eff of a carnot cycle operating between 170C and 620C is closest to:

A pressure gage registers 50 psi in a region where the barometer reads 14.8 psi. Find the absolute pressure in kPa.

A car engine with a power output of 65 HP has a thermal efficiency of 14% Determine the fuel consumption of this car if the fuel HV of 19000 BTU/Ibm.

35 mL sample of gas is enclosed in a flask at 22C. If the flask was placed in an ice bath at 0 deg Celcius, what would the new gas volume be if the pressure is held constant?

If the temperature of an air parcel is 20.5C, and its density is 0.690 kg/ m3, what is the pressure of the air parcel?

Aluminum has a specific heat of 0.902 j/gC. How much heat is lost when a piece of aluminium with a mass of 23.984g cools from a temperature of 415C to a temperature of 22C?

Steam enters a turbine stage with an enthalpy of 3700 KJ/kg and a velocity of 80 m/s and leaves with an enthalpy of 2864 KJ/kg with a velocity of 128 m/s. If the rate of a steam flow through the turbine is 0.44 kg/s, what is the work done in KW?

At a pressure of 60F, a motor bike ire is inflated to 33psi. As it is driven along the C-5 road, the temperature rise to 76F. Assuming the volume remains constant. Determine the final pressure.

A refrigerating system operates on the reversed carnot cycle. The higher temperature of the refrigerant in the system is 120F and the lower is 10F. The capacity is 20 tons. Neglect losses. the coefficient of pertormance.

Specific volume is the number of cubic meters of mixture per kilogram of dry air. If dry air has these following properties: Ra=287 J/kgK, T=303K, Pa=99.604 kPa. Solve for specific volume.

Find the power a rotating shaft which develops a torque of 188 Nm at 1350 грm.

An otto cycle has a pressure ratio of 7. What is the cycle compression ratio?

An otto cycle has a heat rejected 300 kJ and work of 700 kJ. Find the cycle efficiency.

Otto cycle has a clearance of 8% and heat added of 1000 kJ. Find the heat rejected.

Otto Cycle has an initial pressure of 100 kPa and has a pressure of 400 kPa after adiabatic compression. Find cycle efficiency.

An air compressor takes in 9 kg/min of air at 98 kPa, V1=0.125 m3/kg and discharges it at 680 kPa, V2=0.03 m3/kg. The increase of internal energy is 93 kJ/kg and the work done on air is 163 kJ/kg; the change in potential and kinetic energy are neglected. How much heat is transferred per kg of air?

A diesel engine which takes in air at 1 bar, 26C has a compression ratio of 19. Determine the operating clearance in percent.

A diesel cycle has an initial temperature of 27C. If the cut-off ratio is 2.50 and compression ratio is 12. Find the maximum cycle temperature.