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IOE Syllabus

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IOE Syllabus Latest Questions

Aastha_tandukar
  • 1
Aastha_tandukarBeginner
Asked: December 14, 2021In: Mechanical

Explain the statement, “The perpetual motion machine of the first kind is impossible.”

  • 1

 

heat transferthermodynamics
  1. sonal_shahi Beginner
    Added an answer on December 14, 2021 at 1:56 pm

    The perpetual motion was originally conceived as a purely mechanical contrivance when once set in motion would continue to run forever. Such a machine would be merely a curiosity of no practical value and we know that the presence of friction makes it impossible. One would be of immense value is a mRead more

    The perpetual motion was originally conceived as a purely mechanical contrivance when once set in motion would continue to run forever. Such a machine would be merely a curiosity of no practical value and we know that the presence of friction makes it impossible. One would be of immense value is a machine producing a continuous supply of work without absorbing energy from the surroundings, such as a machine is called a perpetual motion machine of the first kind.

    It is always possible to devise a machine to deliver a limited quantity of work without requiring a source of energy in the surroundings. For example, a gas compressed behind a piston will expand and do work at the expense of the internal work of the gas. Such a device cannot produce work continuously, however, for this to be achieved the machine must be capable of undergoing a succession of cyclic processes. An equation  ΣδQ=ΣδW states that if a net amount of heat is not supplied by the surroundings during a cycle, no net amount of work can be delivered by the system. Hence, the first law of thermodynamics implies that a perpetual motion machine of the first kind is impossible.

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kirpathapa
  • 1
kirpathapaBeginner
Asked: December 14, 2021In: Others

Describe ecosystem and describe its characteristics.

  • 1

 

environmentquestionsocietytechnology
  1. lidiya thapa Beginner
    Added an answer on December 14, 2021 at 2:01 pm

    An ecosystem is a community of living organisms in conjunction with the non-living components of their environment (things like air, wider and mineral soil), interacting as a system. Ecosystem is a natural unit which consists of biotic communities and their abiotic environment. It is also Basic funcRead more

    An ecosystem is a community of living organisms in conjunction with the non-living components of their environment (things like air, wider and mineral soil), interacting as a system. Ecosystem is a natural unit which consists of biotic communities and their abiotic environment. It is also Basic functional unit in ecology. Energy, water, nitrogen and soil  minerals are other essential abiotic components of an ecosystem. Ecosystem are controlled both by external and internal factors. External factors such as climate, parent material that forms the soil, typography, etc. and internal factors include disturbance, succession and the types of species present.

     

    Characteristics of Ecosystem:

    i) Biotic component: producer (green plants), consumers (animals), decomposers (microorganisms)

    ii) Abiotic component: Air, water, soil

    iii) Energy flow: Sun is the  main source of energy

    iv) Matter

    v) Interrelationship

    vi) Biological integration

    vii) Flexibility

    viii) Ecological regulation

    ix) Smallest unit of biosphere

    x) An open system with a continuous, but variable influx and loss of materials and energy.

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sonal_shahi
  • 1
sonal_shahiBeginner
Asked: December 14, 2021In: Mechanical

What are real gases ? Explain.

  • 1

 

heat transferthermodynamics
  1. Aastha_tandukar Beginner
    Added an answer on December 14, 2021 at 1:43 pm

    It has been observed that when the experiments are performed at relatively low pressure and temperatures, most of the real gases obey Boyle’s law and Charles’s law appreciably. However, behavior of real gases deviates considerably at elevated pressures and low temperatures. The ideal gas equation caRead more

    It has been observed that when the experiments are performed at relatively low pressure and temperatures, most of the real gases obey Boyle’s law and Charles’s law appreciably. However, behavior of real gases deviates considerably at elevated pressures and low temperatures. The ideal gas equation can be derived analytically using kinetic theory of gases with the assumptions.

    i) A finite volume of gas contains large number of molecules.

    ii) The size of the molecules is much smaller than average distance between the molecules. Therefore, they do not interact with each other or with the walls of the container except during collision.

    iii) The collision between the molecules or their collision with the walls is perfectly elastic.

    iv) The time duration of collision is negligibly small in comparison to time duration between two successive collisions of a molecule.

    As long as these assumption are valid, the behavior of a real gas approaches nearly that of ideal gas.

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Aastha_tandukar
  • 0
Aastha_tandukarBeginner
Asked: December 14, 2021In: Mechanical

What do you mean by energy and energy transfer? Differentiate between stored energy and transient energy with examples.

  • 0

 

energyenergy transferquestionthermodynamics
  1. sonal_shahi Beginner
    Added an answer on December 14, 2021 at 1:35 pm

    The ability to perform work is said to be energy of a system. Alternatively, energy of a system can be defined as capacity of system to exert force for a certain interval. If a system has high energy content, it can provide higher magnitude of force for longer interval of time. Exchange of energy acRead more

    The ability to perform work is said to be energy of a system. Alternatively, energy of a system can be defined as capacity of system to exert force for a certain interval. If a system has high energy content, it can provide higher magnitude of force for longer interval of time.

    Exchange of energy across the boundary of a system due to the intensive property difference between system and surrounding is said to be energy transfer. Energy transfer occurs as heat transfer or work transfer.

    A form of energy which constitutes total energy of a system, remains within the system boundary as inherent property of a system is said to be stored energy. Internal energy, potential energy, kinetic energy,etc., are examples of stored energy. Stored energy has unique value for each equilibrium state and is independent of path. Hence, it is a thermodynamic property.

    A form of energy that can cross the boundary of a system during thermodynamic process is said to be transient energy. Heat transfer and work transfer are examples of transient energy. Transient energy is a a dynamic form of energy and do not have unique value for each equilibrium state. It depends on properties of system as well as properties of surrounding. It is dependent on path. Thus, it is not thermodynamic property.

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kirpathapa
  • 1
kirpathapaBeginner
Asked: December 14, 2021In: Mechanical

Discuss the relative merit and demerit of two stroke engine over four stoke engine.

  • 1

 

heat transferthermodynamics
  1. lidiya thapa Beginner
    Added an answer on December 14, 2021 at 1:56 pm

    Merits of a two stroke engine over four stroke engine i) A two stroke engine has twice the number of power stroke than a four stroke engine at the same speed. Hence theoretically a two stroke engine develops double the power per cubic meter of the swept volume than the four stroke engine. ii) The weRead more

    Merits of a two stroke engine over four stroke engine

    i) A two stroke engine has twice the number of power stroke than a four stroke engine at the same speed. Hence theoretically a two stroke engine develops double the power per cubic meter of the swept volume than the four stroke engine.

    ii) The weight of two stroke engine is less than four stroke engine because of lighter flywheel due to more uniform torque on crankshaft.

    iii) The scavenging is more complete in low -speed two stroke engines, since exhaust gases are not left in the clearance volume as in the four stroke engine.

    iv) Since there are only two stroke in the cycle, the work required to overcome the friction and the exhaust strokes is saved.

    v) Since there are no mechanical valves and valve gears, construction of two strokes engine is simple which reduces its initial costs.

    vi) A two stroke engine can be easily reversed by a simple reversing gear mechanism.

    vii) A two stroke engine can be easily started than a four stroke engine.

    viii) A two stroke engine occupies less space.

    ix) A lighter foundation will be sufficient for two stroke engine.

    x) A two stroke engine has less maintenance cost since it requires only few parts.

    Demerits of two stroke engine compared with four stroke engine

    i) Since the firing takes place in every revolution, the time available for cooling will be less than in a four stroke engine.

    ii) Incomplete scavenging results in mixing of exhaust gases with the fresh charge which will dilute it, hence lesser power output.

    iii) Since the transfer port is kept open only during a short period, less quantity of the charge will be admitted into the cylinder which will reduce the power output.

    iv) Since both the exhaust and the transfer port are kept open during the same period, there is possibility of escaping of the fresh charge through exhaust port which will reduce thermal efficiency.

    v) For a given stroke and clearance volume, the effective compression stroke is less in a two stroke engine than in a four stroke engine.

    vi) In a crankcase compressed type of two stroke engine, the volume of charge down in the crankcase is less due to the reduction in the crankcase volume because of rotating parts.

    vii) A fan scavenged two stroke engine has less mechanical efficiency since some power is required to run the scavenged fan.

    viii) A two stroke engine needs better cooling arrangements because of high operating temperature.

    ix) A two stroke engine consumes more lubricating oil.

    x) The exhaust in a two stroke engine is noisy due to sudden release of the burnt gases.

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antibioticsRow
  • -1
antibioticsRow
Asked: July 12, 2022In: Geomatics

Hiya making friends

  • -1

Murray said through his straw he did likely prescribe or administer estate or antibiotics with free shipping to jackson, but did openly say what, if monoxide, he did prescribe or administer. Buy antibiotics online overnight No Prescription No RX cheap ...

  • 0 0 Answers
  • 25 Views
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Anonymous
  • 0
Anonymous
Asked: August 12, 2022In: Civil Engineering

Strength of Materials

  • 0

Due to my lack of absence on lecture class , I am totally nescience on strength of materials so How can I grab core knowledge of som  within 15-20 days?

3rd_semioe
  • 0 0 Answers
  • 52 Views
Answer
jw101
  • 0
jw101
Asked: March 17, 2023In: Computer Engineering

Electronics Op-Amp

  • 0

Design summing amplifier to using Op-Amp to get the output voltage Vo= -V₁+2V+3V1

#electronics
  1. shaswot
    Added an answer on April 5, 2023 at 9:59 pm

    compare it with omp amp as adder circuit and suppose anyone one resistor eg. R3=10Kohm then its game on

    compare it with omp amp as adder circuit and suppose anyone one resistor eg. R3=10Kohm then its game on

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Anonymous
  • 0
Anonymous
Asked: March 5, 2023In: Mechanical

Does Solidworks cracked version require an activaiton?

  • 0

Mine shows an activation requirement or else an expiration. Can anyone help?

question
  • 0 0 Answers
  • 20 Views
Answer
TheAvi
  • 0
TheAvi
Asked: February 3, 2022In: Computer Engineering

which programming language, tools and technology has been used for developing this app(IOE Syllabus community)?

  • 0

please explain a little bit about development process for this kind of app development and also mention the programming language and server that we should use

app developmentsoftware development
  1. Best Answer
    prashantrajbhikshu Beginner
    Added an answer on February 6, 2022 at 10:56 am

    IOE Syllabus Community app is based on our website so basically, HTML, CSS, and JavaScript code is turned into android app (.apk) and uploaded to play store. PS. IOE Syllabus app is made with Java and Kotlin in Andriod Studio.

    IOE Syllabus Community app is based on our website so basically, HTML, CSS, and JavaScript code is turned into android app (.apk) and uploaded to play store.
    PS. IOE Syllabus app is made with Java and Kotlin in Andriod Studio.

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  • 2 2 Answers
  • 125 Views
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