A material which conducts electricity only at high temperature is termed as _______________.

Q: Which statement is FALSE? a) The purpose of refrigerator is to remove heat from a cold medium b)…

A: The purpose of refrigerator is to extract heat from cold medium and eject is to hot surrounding.…

Q: is available in the electric systems and mechanical systems. O liquid air O gas no medium

A: Mechanical system: A set of components which convert a specific input force or motion into a desired…

Q: 6 ohm 15 ohm 12ohm 150V

A:

Q: “photon-rocket

A: DEAR student kindly refer solution in attachment.

Q: Mini-split AC units commonly has a SEER rating of 20 or more. If the unit uses 8,645 watts of energy…

A: Given data:

Q: What is Distortion energy?

A: Distortion in a body is caused when there are shear stress present on the body. Due to these shear…

Q: elements of combustion for fire building and camping

A: The elements that are required for combustion are oxygen, heat, and fuel. These elements can be…

Q: What is electrochemical series

A: Definition- electrochemical series is a serial arrangement of metallic elements or ions according to…

Q: What is restitution impulse?

A: Fig.1   Consider two bodies A and B of mass M as shown in Fig.1. When body A strikes to body B, a…

Q: Defined Principle Operation in electricity generator in terms of electromagnetic theories?

A: Electric Generator: A generator is a machine that converts mechanical energy into electrical energy.…

Q: All changes Wires (electrical energy) Turbine (mechanical energy) Fire (heat energy) Coal (chemical…

A:

Q: What is the Btu/hour output of an electric heater rated at 15 kilowatts?a. 51.15 Btu/hourb. 51,150…

A: As we know that 1kW = 3412 BTU/hr The. We need to convert 15 kW to BTU/hr

Q: Metaita (very good conductors of electricity because:

A: To find :-  Correct option

Q: What are the functions (or names) of those power electronics devices (blank boxes)?

A: The electric vehicle system makes use of some of the most important power electronic components…

Q: Which is the "noise"?

A: We can produce sound by creating some vibration with objects.

Q: Which can do work faster per unit time?

A: In order to solve the problem,It is important to define the given options properly.

Q: Discuss the three requirements for a generator to generate electricity

A: Solution: Generator is an electro-mechanical device which can convert the rotational energy of the…

Q: 2 is a symbol for_. 1 3 O a. 3/3 DCV normally Open b. 2/3 DCV normally closed c. 2/3 DCV normally…

A: It is required to choose correct Answer

Q: Which type of accumulator uses the concept of force of gravity to store the potential energy?…

A: Weight -Loaded Accumulator is used as concept of gravity to store Potential Energy. In Weight-Loaded…

Q: Who invented sunflower solar panels and when?

A: Who invented sunflower solar panels and when?

Q: Question No. 10 Electric supply of a house is through a 15 A fuse. When a 2000 W heater is used in…

A: Answer: The number of 100 W bulbs that can be used simultaneously are 13. Therefore, the correct…

Q: explain why aluminum is commonly used as a conductor in overhead power lines

A: Those aluminum conductors which are used in overhead power lines are  called as ACSR or Aluminum…

Q: What are breeder reactors?

A: A breeder reactor is a nuclear reactor that generates more fissile material than it consumes.…

Q: The unit of discharge in m3/kg Select one: True False

A: Basic units: Area = m 2 Velocity = m/s

Q: What happens to an electrical circuit when thereis unwanted resistance in it?

A: Given Data : Electric circuit

Q: Which of the following causes acoustical grating? a) Magnetic waves b) Electric waves c)…

A: The density of the liquid varies layer by layer when an ultrasonic wave passed through it. Due to…

Q: A load is an electrical device that__________.a. produces electricityb. directs the flow of…

A: Load  is referred any device/equipment connected to electric circuit which consumes electricity and…

Q: The conclusion of Inverse Square Law for Heat

A:

Q: Which one of the below is not the source of UV radiation? Sunlight Electric arc…

A: UV radiation is a form of electromagnetic radiation that comes from sun and some man made sources.…

Q: What is the main difference between an electrical and mechanical power?

A: Difference between electrical and mechanical power.

Q: II- Instruments that employing to measuring power of electricity is called- a) Energy meter b)…

A: Dear student,                      According to the guidelines, I am allowed to answer only one…

Q: Guide Questions: 1. What are the stationary parts of a motor? Why are they not moving? 2. What are…

A: An electric motor is a device that converts electrical energy into mechanical energy. The…

Q: 6) The source of energy in Explosion welding process is Mechanical energy Chemical energy Radiation…

A: The explosion welding process is used to produce the bonding between the similar metals and it does…

Q: DEFINE THE FOLLOWING TERM: Isentropic Power.

A: The change of state of a substance is known as a process. The process is of the following type 1)…

Q: Which of the following is NOT utilized in a refrigerator to reduce pressure of the refrigerant?…

A: The valve which are used to reduce pressure of the refrigerant in refrigerators are Automatic…

Q: Wi W2}o * A W3 D The shown schema for measurement of active power in three phase systems is: Select…

A: Answer: Three Phase Four wire connection.

Q: In a high voltage circuit,is the fan motor a power passing or power consuming device?

A: In a high voltage circuit, is the fan motor a power-consuming device

Q: Explain the Electromechanical Energy conversion and its features

A: Electromechanical energy conversion means conversion from the electrical form of energy into the…

Q: (i) which has the greater power output? (ii) which has the higher efficiency?

A:

Q: What happens if the excitation current of two generators operating in parallel is changed?

A: GIVEN :- What happens if the excitation current of two generators operating in parallel is changed.…

Q: e of freedom according to which of the following equation?

A: Given - Degree of freedom-2 Links-5 Binary Joints- 3 Higher pair- 4 To determine the satisfied…

Q: what is the decrease in internal energy?

A: The initial volume of the air is, V1=80 ft3=2.26535 m3 The initial pressure of the air is, P1=350…

Q: what is a thermistor

A: Thermistor :

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.