Combined heat and power economic emission dispatch (CHPEED) problem is a highly complex, non-linear, non-convex multi-objective optimization problem due to two conflicting objectives and various operational constraints such as valve-point loading effect, power transmission loss, prohibited operating zone, and the feasible operating region of …
Q = Heat gain or loss, m = mass, c = specific heat, ΔT = Change in temperature. Heat capacity: Heat capacity or thermal capacity is a physical property of matter, defined as the amount of heat to be supplied to an object to produce a unit change in its temperature. The SI unit of heat capacity is joule per kelvin (J/K). Calculation: Given:
HMT MCQ Objective : Part 1 | Part 2 | Part 3. 62. According of Kirchhoff's law, (a) radiant heat is proportional to fourth power of absolute temperature. (b) emissive power depends on temperature. (c) emissive power and absorptivity are constant for all bodies. (d) ratio of emissive power to absorptive power is maximum for perfectly black body.
You can send your comments directly at info@mechanicaltutorial. 2. The critical pressure ratio for initially dry saturated steam is..... A. 0.528 B. 0.546 C. 0.577 D. 0.582
5. The specific heat capacity of water is 4180 J k g − 1 ∘ C − 1. If 877.8 k J of energy are added to a volume of water to raise its temperature from 20 ∘ C to 50 ∘ C, what mass of water ...
a) It is easier to make narrow slots than wide open slots. b) Large number of narrow slots reduces motor noise. c) Large number of narrow slots reduces noise and tooth pulsation losses. d) It helps in uniform distribution of flux. Ans: (c) 324.
Abstract. Microgrids play a critical role in the transition from conventional centralized power systems to the smart distributed networks of the future. To achieve the greatest outputs from microgrids, a comprehensive multi-objective optimization plan is necessary. Among various conflicting planning objectives, emissions and cost are …
The following are the expected 2023 WAEC Physics objective questions and their respective answers. 1. Three capacitors each of capacitance 18µf are connected in series. ... 2023 WAEC Physics Theory Questions (a) Define specific heat and calorie. (b) Find the mass of a steel with specific heat capacity of 330J/kgk, if the temperature is …
Heat is basically a form of energy. Every atom and molecule has the property to transfer heat. Basically heat transfer takes place between two bodies when there is temperature difference between them. Heat can be transferred in 3 ways. These are conduction, convection and radiation. Conduction, convection and radiation are related …
This set of Applied Chemistry Multiple Choice Questions & Answers (MCQs) focuses on "Biomass and Biofuel – 1". 1. The term biomass most often refers to _____ ... biomass is most often refers to the organic matters such as timber and crops grown specially to be burnt to generate heat and power. 2. Dead organisms also come under the biomass
Heat Transfer Question 1 Detailed Solution. The Correct answer is (B) and (C) Explanation: The statement (A) that water is transparent is not a valid reason for not using it as a thermometric liquid. Transparency, or the ability to see through a substance, does not directly impact its suitability for use as a thermometric liquid. Transparency ...
Turbine Question 14: An ideal gas steadily flows through an insulated turbine with inlet and exit temperature of 2000 K and 500 K respectively. The minimum mass flow rate (in kg/s) of the gas to achieve a power output of 10 MW is _______. Take specific heat capacity, C p of gas 1.2 kJ/kg K.
Diesel Cycle Question 1: A diesel engine has a compression ratio of 15 and heat addition at a constant pressure takes place at 6% of stroke. Find the air standard efficiency of the diesel …
DC Machines Questions and Answers – DC Motor Basics -1. This set of DC Machines Multiple Choice Questions & Answers (MCQs) focuses on "DC Motor Basics -1". 1. What will happen if DC shunt motor is connected across AC supply? a) Will run at normal speed. b) Will not run. c) Will Run at lower speed. d) Burn due to heat produced in the field ...
When the objective becomes optimum heat and power dispatch simultaneously, a more complicate situation arises. CHP is designed to provide heat and power economically, while power generating units or heat only units have simpler dispatch problem. Furthermore, greenhouse gases in the earth space mainly results from power …
Rankine cycle: The Rankine cycle is an ideal cycle of a heat engine which uses water and steam as a working fluid to generate power with the help of a steam turbine. Four processes in the Rankine cycle: Process 1–2: Isentropic compression: Working fluid is pumped from low to high pressure.
Bearing Question 1 Detailed Solution. Explanation: Bearing: A bearing is a mechanical component that decreases friction between moving parts by restricting relative motion to only the desired motion. The bearing's design may allow for free linear movement of the moving part or free rotation around a fixed axis. Rolling Contact Bearing:
Heat is basically a form of energy. Every atom and molecule has the property to transfer heat. Basically heat transfer takes place between two bodies when there is temperature difference between them. Heat can be transferred in 3 ways. These are conduction, convection and radiation. Conduction, convection and radiation are …
Solar Energy Question 7 Detailed Solution. Download Solution PDF. The correct answer is Silicon. Key Points. Concept: Solar cell: A solar cell, or photovoltaic cell, is an electrical device that converts …
The proposed model can be easily embedded in the energy management system of the customer equipped with combined heat and power systems (CHPs), a power-only unit, a boiler unit and a heat buffer ...
b) Increase turbulence in flow for enhancing heat transfer. c) Surface area is maximum to promote the rate of heat transfer. d) Increase temperature gradient so as to enhance heat transfer. View Answer. 17. A heating unit is made in the form of a vertical tube of 50 mm outside diameter and 1.2 m height.
This article lists 100 Wind Energy MCQs for Engineering Students.All the Wind Energy Questions & Answers given below includes solution and link wherever possible to the relevant topic.. The wind is a dynamic motion of air in all directions or in a specific direction within a specific environment. The reason behind the motion of air is …
[2] Alipour M., Zare K, Seyedi H and Jalali M. 2019 Real-time price-based demand response model for combined heat and power systems Energy 168 1119-1127. Google Scholar [3] Shaabani Y, Reza A and Kouhanjani MJ 2017 Stochastic multi-objective optimization of combined heat and power economic / emission dispatch …
The following are various forms of energy except (a)solar energy (b)heat energy (c)light energy (d)physical energy 20. What is the power of a child that has done work of 50J in 10seconds. (a)50W (b)20W (c)30W (d)5W Essay Questions Answer ANY TWO (2) questions from this section 1a. Define work and energy 1b.
Heat Exchanger Question 2: Consider a counter-flow heat exchanger with the inlet temperatures of two fluids (1 and 2) being T 1, in = 300 K and T 2, in = 350 K. The heat capacity rates of the two fluids are C 1 = 1000 W/K and C 2 = 400 W/K, and the effectiveness of the heat exchanger is 0.5.
This section contains only Mechanical & Automobile Engineering Heat Engines Quiz, MCQ, Multiple Choice, Objective Type, Online Test, Mock Test, Question Bank for GATE, NEET, , MAT, SAT, GRE, XAT, SSC, UPSC, Railway, Postal Exams Model Previous Year Questions and Answers Pdf Free Download. - 1.
This set of Class 11 Physics Chapter 6 Multiple Choice Questions & Answers (MCQs) focuses on "Work, Energy, and Power". These MCQs are created based on the latest CBSE syllabus and the NCERT curriculum, offering valuable assistance for exam preparation. 1. The energy possessed by a body by the virtue of its motion is called …
So maximum heat will be generated when this block's whole kinetic energy is converted into heat energy. So; Maximum heat energy finally = total kinetic energy initially. Maximum heat energy finally = ( {1 over 2}mv^2= {1 over 2} times 20 times 10^2=1000 J) Maximum heat generated = 1000 J = 1 kJ. So the correct answer is …
The correct answer is option 3) i.e. for all type of forces. CONCEPT:. Work-energy theorem: The work-energy theorem states that the net work done by all the forces on an object equals the change in its kinetic energy. Work done, (W = Delta KE = frac{1}{2}mv^2 - frac{1}{2}mu^2) Where m is the mass of the object, v is the final …
Ref. [6] presented a model of the IHS equipped with PV, wind turbine (WT), energy storage systems (ESSs), electric vehicles, and diesel generators.The suggested scheme was proposed as a multi-objective optimization problem aiming to minimize the total costs of construction, maintenance, and operation of resources and ESSs within …
Top Power and Efficiency MCQ Objective Questions . Power and Efficiency Question 6 Download Solution PDF. An engine at full load delivers 200 kW brake power. It requires 25 kW to rotate it without fuel at the same speed. The mechanical efficiency at half load is: ... {Indicated Power}{Heat added per second})
Consider the following statements for cooling towers: 1. Cooling tower is an artificial device used to cool the hot cooling water coming out of condenser more effectively. 2. The amount of water usually lost with induced draft cooling tower ranges from 5% to 6% by evaporation. 3.
Heat and Temperature Questions with Answers. 1. One litre of water at 30 degree Centigrade is mixed with one liter of water at 50 degree Centigrade. The temperature of the mixture will be. 2. An iron ball at 40 degree Centigrade is dropped in a mug containing water at 40 degree Centigrade.
Power Engineering Question 5: The power developed by a turbine in a certain steam power plant is 1100 kW. The heat supplied to boiler is 3000 kJ/kg. The heat rejected by steam to cooling water is 2200 kJ/kg. the feed pump work required to condensate back into the boiler is 10 kW. What will be mass flow rate of cycle?
