A three stage air compressor air fron 100kPa to 1000kPa. Find the intercooler lressure between the first and second stage

If a particle has a velocity of 4 meters per second and a kinetic energy of 144 Joules, then the mass, in kilograms of this particle must be:

To what height will 68°F ethyl alcohol rise in a 0.005 inch internal diameter glass capillary tube? The density of alcohol is 49 lbm/ft. where: B= 0° = contact angle and surface tension σ = 0.00156 lbf/ft @ 68°F.

A current of 7 amperes passes through a 12 ohm resistor. What is the power dissipated in the resistor?

How many cubic meters is 100 gallons of liquid?

If the gage pressure of a medium is 30 kPa (vacuum) and the atmospheric pressure is 101.3 kPa, the absolute pressure will be:

The Reynolds number of a sphere falling in air is 1 x10⁶. If the sphere's radius is 1ft, what is its velocity? (Pair = 0.00234 slug/ft, ųair= 3.8 x 10⁷lbf-sec/ft²

The feedwater to a boiler is 92% condensate and 8% make-up containing 270 ppm solids. What weight of solids enter the boiler per hour at 22,680 kg per hr steam evaporation.

Find the length of a suspension bunker to contain 181 tons of coal without surcharge; width, 4.6 m; depth 4.3 m. The level capacity of a suspension bunker Is 5/8 wdL where: w = width, d = depth and L = length. Density of coal, 800 kg/m3.

100 g of water are mixed with 150 g of alcohol (density 790 kg/m3). What is the specific volume of the resulting mixtures, assuming that the fluids mixed completely?

Determine the estimated condenser load for an open-type compressor having a cooling capacity of 16,500 Btu/hr and a heat rejection factor of 1.32.

A Carnot cycle has a maximum temperature of 550 °F and minimum temperature of 100 °F. If the heat added is 4200 Btu/min, find the horsepower output of the engine.

During the working stroke of an engine the heat transferred out of the system was 150 kJ/kg of working substances. The internal energy also decreased by 400 kJ/kg of working substance. Determine the work done.

Steam turbine is receiving 1014 lbm/hr of steam, determine the horsepower output of the turbine if the work done by steam is 251 Btu/lbm

What is the resulting pressure when one pound of air at 0.3 psig and 200 °F is heated at constant volume to 800 °F?

The type of flow occupying in a 1 cm diameter pipe which water flows at a velocity of 2.50 m/s. Use v = 1.13 x 10^-6 m2/s of water.

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

A 75 MW power plant has an average load of 35,000 kW and a loadfactor of 65%. Find the reserve over peak.

A fluid in a cylinder is at a pressure of 700KN/m2. It is expanded at a constant pressure from a volume of 0.28m3 to a volume of 1.68m3. Determine the work done.

A circular cylinder 4 feet long and 3 feet in diameter is in air stream. The flow velocity is 5 ft/sec perpendicular to the axis of the cylinder. Given that the coefficient of drag, Co, on the cylinder is 1.3, and the density of air is 0.00234 slug/ft, what is the force on the cylinder?

A 35.0 mL sample of gas is enclosed in a flask at 22 degrees Celsius. If the flask was placed in an ice bath at 0 degrees Celsius, what would the new gas volume be if the pressure is held constant?

Find the effective head of a reaction turbine that develops 500 BHP where flow through the turbine is 50 cfs. Water enters at 20 fps with a 100 ft pressure head. The elevation of the turbine above the tailwater level is 8 ft.

A thermal power plant has a heat rate of 11,363 Btu/KW- hr. Find the thermal efficiency of the plant.

A force of 200 lb, acts on a block at an angle Of 28° with respect to horizontal. The block is pushed 2 feet horizontally. What is the work done by this force?

What is the mass of acetylene gas, V=0.94 cu.ft., R=59.35 ft.lb/lb °R, T = 90°F, P= 200 psia

A house that was heated by electric resistance heaters consumed 1200 kWh of electric energy in a winter month. If this house were heated instead by a heat pump that has an average performance factor, PF of 2.4, determine how much money the homeowner would be saved that month. Assume a price of 0.085$/kWh for electricity.

A double suction centrifugal pumps delivers 20 ft3/sec of water at a head of 12 m and running at 650 rpm. What is the specific speed of the pump?

Kerosene is the fuel of a gas turbine plant: fuel-air ratio, mf = 0.035, T3 = 972K, pressure ratio, rp = 4.5, exhaust to atmosphere. Find the available energy in KJ per kg air flow. Assume k = 1.34 and Cp = 1.13.

In a process carried out on a closed system, the work transferred into the system was 4200KJ and the increase in the total energy of the system was 3500KJ. Determine the heat transferred.

Air at 10 deg C and 80 kpa enters a diffuser of a jet engine steadily with a velocity of 200 m/s. The inlet area of diffuser is 0.40 m2. Determine the mass flow rate of air.

A duct 0.40 m high and 0.80 m wide suspended from the ceiling in a corridor, makes a right angle tum in the horizontal plane. The inner radius is 0.2 m and the outer radius is 1.0 m measured from the same center. The velocity of air in the duct is 10 m/s. Compute the pressure drop in this elbow. Assuming; f = 0.3, p = 1.204 kg/m3 and L = 10 m.

The feedwater to a boiler is 92% condensate 8% make-up containing 281 ppm solids. What weight of solids enter the boiler per hour at 22,680 kg per hr steam evaporation.

An adiabatic tank containing air is used to power an air turbine during times of peak power demand. The tank has a volume of 500 m3 and contains air at 1000 kPa and 500°K. Determine the mass remaining when the pressure reaches 100 kPa.

Air has a specific heat of 1 kJ/kg.K. If 2 BTU of energy is added to 100 g of air, what is the change in air temperature?

A centrifugal pump discharged 20 L/s against a head of 17 m when the speed is 1500 rpm. The diameter of the Impeller was 30 cm and the brake horsepower was 6.0. A geometrically similar pump 40 cm in diameter is to run at 1750 rpm. Assuming equal efficiencies, what brake horsepower is required?

The brake thermal efficiency of a 1MW diesel electric plant is 43%. Find the heat generated by fuel in kW if the generator efficiency is 89%

Unknown volume of container gas of gas of 1 atmosphere is allowed to expand to another container of 10 m3 volume at 500 mm Hg at constant temperature. Find the unknown volume.

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

If the air required for combustion is 20 kg per kg of coal and the boiler uses 3000 kg of coal per hr, determine the mass of gas entering the chimney. Assume an ash loss of 15%.

The specific gravity of mercury relative to water is 13.55. What is the specific weight of mercury? (The specific weight of water is 62.4 lb, per cubic foot.)

A gas has a density of 0.094 lb/ft at 100°F and 2 atm. What pressure is needed to change the density to 0.270 lb/ft at 250°F ?

An iron block weights 7 Newtons and has a volume of 200 cubic centimeters. What is the density of the block?

A turbine has a peripheral coefficient of 0.6. Find the runner diameter of the turbine if it operates at 450 rpm and a head of 60 m.

Find the power of a rotating shaft which develops a torque of 188 N-m at 1350 rpm.

The tailwater and the headwater of a hydro-electric plant are 150 m and 200 m respectively. What is the water power if the flow is 15 m3/s and a head loss of 10% of the gross head?

A 50,000 KW steam plant delivers an annual output of 238,000,000 kW-hr with a peak load of 42,860 kW. What is the annual load factor and capacity factor?

The mass of an outside air at 50°C in an air conditioning unit is 60 kg. Find the temperature after mixing if the outside air mixed with 40 kg with recirculated air at 35°C.

A vertical furnace wall is made up of an inner wall of firebrick 20 cm thick followed by insulating brick 15 cm thick and an outer wall of steel 1 cm thick. The surface temperature of the wall adjacent to the combustion chamber is 1200°C while that of the outer surface of steel is 50°C. The thermal conductivities of the wall material in W/m- K are firebrick, 10; insulating brick, 0.26; and steel, 45. Neglecting the film resistances and contact resistance of joints, determine the heat loss per sq.m. of wall area.

One insulated wall of a cold-storage compartment is 8 m long by 2.5 m high and consists of an outer steel plate 18 mm thick. An inner wood wall 22.5 mm thick, the steel and wood are 90 mm apart to form a cavity which is filled with cork. If the temperature drop across the extreme faces of the composite wall is 15°C. Calculate the heat transfer per hour through the wall and the temperature drop across the thickness of the cork. Take the coefficients of thermal conductivity for steel, cork and wood as 45, 0.045, and 0.18 W/m-K respectively.

To what height will a barometer column rise if the atmospheric conditions are 13.9 psia and 68°F and barometer fluid is mercury?

An ideal gas mixture consists of 2 kmol of N2 and 6 Kmol of CO2. The mass fraction of CO2 is:

A Carnot cycle operates between 30 °C and 350 °C. Find the cycle efficiency. A.

At a pressure of 60°F, A motorbike ire is inflated to 33psig. As it is driven along the C-5 road, the temperature rise to 76°F. Assuming the volume remains constant. Determine the final gauge pressure.

Hot gases at 280°C flow on one side of a metal plate of 10mm thickness and air at 35°C flows on the other side. The heat transfer coefficient of the gases is 31.5 W/m2-K and that of the air is 32 W/m2K. Calculate the over all transfer coefficient.

To what height will a barometer column rise if the atmospheric conditions are 13.9 psia and 68°F and barometer fluid is mercury?

The pressure of 750 mm Hg in kN/m2.

Fifty kilograms of cooling water per second enter the condenser at 25°C and leaves at 50°C. Find the heat carried away by water.

A double-overhung impulse-turbine installation is to develop 20,000 hp at 275 rpm under a net head of 1100 ft. Determine the specific speed.

Compute the pressure drop of 30°C air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. Use a friction factor, f = 0.02, and pair = 1.1644 kg/m3.

A refrigerating system operates on the reversed Carnot Cycle. The higher temperature of the refrigerant in the sytem is 120 °F and the lower is 10 °F. The capacity is 20 tons. Neglect losses. Determine the coeffecient of performance.

How long must a current of 5.0 amperes pass through a 10 ohm resistor until a charge of 1200 coulombs passes through?

What is the pressure at point A in the tank if h = 2 feet? (g = 32.3 ft/sec2, and p=1.94 slug/ft)

A 4m² asphalt pavement with emissive of 0.85 has a surface temperature of 50 deg C. Find the maximum rate of radiation that can be emitted from the surface.

A substance temperature was 620 deg R. What is the temperature in deg C?

A steam turbine receives a steam flow of 1.35 kg/s and delivers 500 KW. The heat loss from the casing is negligible. Find the change of specific enthalpy across the turbine when the velocities at the entrance and exit and the difference in elevation at the entrance and exit are negligible

What pressure is a column of water 100 centimeters high equivalent to?

Water flowing at the rate of 10 m/s from an orifice at bottorn of a reservoir. Find the pressure at the bottom of reservoir.