Q 20 please 14) A pump is defined as a device which converts:(a) hydraulic energy in to mechanical energy.(c) kinetic energy into mechanical energy.b) mechanical energy into kinetic energy.(d) none of the them.15) A turbine is a device which converts:(a) hydraulic energy in to mechanical energy. (b) mechanical energy into hydraulic energy.(c) kinetic energy into mechanical energy. (d) electrical energy into mechanical energy.16) To produce a high head by multistage centrifugal pumps, the impellers are connected:(a) in parallel. (b) in series.(c) in parallel and series.(d) none of the them.17) To discharge a large quantity of liquid by multi-stage centrifugal pump, the impellers are connected:(a) in parallel. (b) in series. (c) in parallel and series. (d) none of the them.18) Cavitation will take place if the pressure of the flowing fluid at any point is:(a) more than vapour pressure of the fluid.(c) is less than vapour pressure of the fluid.(b) equal to vapour pressure of the fluid.(d) none of the them.19) Tick mark the correct statement:(a) Centrifugal pump convert mechanical energy into hydraulic energy by sucking liquid into chamber.(b) Reciprocating pumps converts mechanical energy into hydraulic energy by means of centrifugal force.(c) Centrifugal pumps convert mechanical energy into hydraulic energy by means of centrifugal force.(d) Reciprocating pumps convert hydraulic energy into mechanical energy.10) Indicator diagram shows for one complete revolution of crank the:(a) variation of kinetic head in the cylinder.(c) variation of kinetic and pressure head in the cylinder.(b) variation of pressure head in the cylinder.(d) none of the them.

Answered: Image /qna-images/answer/18c4ee82-691c-4e3e-8180-5e3887fe2698.jpg

20) Indicator diagram shows for one complete revolution of crank the: (a) variation of kinetic head in the cylinder. (c) variation of kinetic and pressure head in the cylinder. (b) variation of pressure head in the cylinder. (d) none of the them.

20) Indicator diagram shows for one complete revolution of crank the: (a) variation of kinetic head in the cylinder. (c) variation of kinetic and pressure head in the cylinder. (b) variation of pressure head in the cylinder. (d) none of the them.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Air enters a gas turbine steadily at pressure 20 kPa, volumetric flowrate 1,000 m³/s, and temperature 300 C. If the air exits the turbine at pressure 7 kPa and temperature 80 C. a) determine the power generation in the turbine assuming changes in the kinetie energy and potential energy at the inlet and outlet condition is negligible. b) Determine the volumetric flowrate of air out of the turbine.
(2.) Steam enters a turbine with an enthalpy of 1292Btu/lb and leaves with an enthalpy of 1098 Btu/lb. The transferred heat is 13 Btu/lb. what is the work in kW and in hp for a flow of 2 lb/sec? draw a figure also, and explain each step by step solution.
848 kJ/kg, 2. Steam enters a turbine with a pressure of P₁ = 4,502 kPa, a, specific internal energy u₁ = mass flow rate of 1.5 kg/s and density of p₁ = 1.498 kg/m³. Steam leaves at P2 = 2996 kPa Heat loss from the with a density of p2 = 2.5 kg/m³ and a specific internal energy of u2 = 1096 kJ/kg device by radiation is 50 kJ/kg. Neglecting the changes in kinetic and potential energies, determine the power produced by the systen Answer:
A steam turbine seems to operate at a mass flow rate of 1.5 kg / hr. Turbine inlet state P1 = 2 MPa, T1 = 400C and V1 = 60 m / s; the output state is P2 = 0.1 MPa, x2 = 0.97 and V2 = 150 m / s. Difference in height between turbine outlet 1 m. The heat loss from the turbine is given as 50 kW. a) Determine the production power from the turbine. b) Turbine power neglecting Kinetic and Potential energy changes calculation. Interpret these two results. c) Turbine spring and cross section areas, as well as steam pipe diameters calculation. d) If the ambient temperature is 27C, what is the entropy generation in the turbine?
Select the expression representing the flow work (flow energy), where is pressure, is volume, is velocity ________
In a steam turbine, water vapor enters at a temperature of 450C and a pressure of 2.5 MPa, at a speed of 60 m/s at a height of 12 m, and at a pressure of 20 kPa at a speed of 0.85 degrees of dryness, at a speed of 180 M/s at a height of 6 m. During this process, a power generation of 5 MW occurs. According to the given; a) compare kinetic, potential and enthalpy changes. b) calculate the work done by the unit mass of steam flowing from the turbine. c) calculate the mass flow of steam.
a. Water flowing at 2.6 KL/s is taken from a river and delivered to a turbine 100m lower than the source. If the turbine/generator has an efficiency of 45%, calculate the electrical power that would be delivered over one year. b. Explain, with the aid of suitable graphs, the charge and discharge cycle of a deep cycle lead acid battery. c. In a thermal power plant, 1500 MWh of energy is to be produced in a day, half from oil and half from natural gas, Calculate, for a one year period: the number of barrels of oil required if the fuel oil plant is 40% efficient. the total amount of natural gas required if the efficiency of the gas plant is 48% If a coal plant of 45% was used to supply the full load for a week, how much coal would be required? Use the following conversions in your calculations. Fuel & Energy Conversion & Equivalence Chart (reduced) http://www.cogeneration.net/FuelAndEnergyConversionandEquivalence.htm 1. Fuel Oil: 1 Gal of #4 Fuel Oil - 145,000 Bou's 1 Barrel of Oil -42…
Water vapor enters an adiabatic turbine at a pressure of 8 MPa, a temperature of 600 ℃ and a speed of 100 m/s, and then a pressure of 50 kPa exits at a temperature of 150 ℃ and a speed of 160 m/s. The turbine power is 10 MW. According to this; a) The steam flow rate from the turbine b) Do you find the isanthropic efficiency of the turbine?
b) A wind turbine is a device used to convert the kinetic energy of flowing air into mechanical energy, then to electrical energy with the aid of a generator. Consider a single operational turbine that received an average wind velocity of 80 km/h on a single day. The mass of wind flowing through the turbine blades is estimated to be 50 kg/s with an output power measured at 8 kW. Determine the efficiency of the generator within the turbine.
صتار 2.4 Application of Steady Flow Energy Equation (S.F.E.E)
3. A simple steam power plant illustrated below uses 20 kg/s of steam. Find: a) the boiler heat transfer rate; b) the turbine power output; c) the condenser duty; d) the pump power required. What is the ratio of net power out to heat in (the thermal efficiency)? The turbine and the pump are adiabatic 2 Boiler Pump 2 3 |3|4 Stream T(°C) P(MPa) 40 40 Turbine 600 x = 1 Condenser 0.01 10 10 0.01 A
1. Water in the rural areas is often extracted from underground water source whose free surface is 60 m below ground level. The water is to be raised 5 m above the ground by a pump. The diameter of the pipe is 10 cm at the inlet and 15 cm at the exit. Neglecting any heat interaction with the surroundings and fictional heating effects. What is the necessary power input to the pump in kW for a steady flow of water at the rate of 15 li/s? Assume pump efficiency of 74%.