Why is energy required for all activities ? How can energy be generated ? Explain. -SST 10th

Why is energy required for all activities ? How can energy be generated ? Explain. -SST 10th
by

1 Answer

Answer :

1. Energy is the basic unit required for any kind of work or activity. We need energy to perform the various activities such as cooking, providing heat and light, drive vehicles and machinery in industries.  2. Energy can be divided into - conventional and nonconventional sources of energy. These resources play an important role in providing energy to various sectors of the economy. 3. Energy can be generated from conventional sources such as coal, petroleum, natural gas, firewood, and cattle dung as well as non-conventional sources such as solar energy, wind energy. atomic energy, and tidal energy and so on.
by

Related questions

Why is energy required for all activities? -SST 10th

Description : Why is energy required for all activities? -SST 10th

Last Answer : (i) Energy is a basic requirement for economic development. (ii) Every sector of the national economy needs input of energy (iii) Consumption of energy in all forms has been steadily ... Energy can be generated from fuel minerals like coal, petroleum, natural gas, uranium and from electricity.

Which model is used to compute the effort required to integrate reusable components or program code that is automatically generated by design or program translation tools? a) An application-composition model b) A post-architecture model c) A reuse model d) An early design model

Description : Which model is used to compute the effort required to  integrate reusable components or program code that is  automatically generated by design or program translation  tools? a) An application-composition model b) A post-architecture model c) A reuse model d) An early design model

Last Answer : c) A reuse model

the energy with in the earth is generated due to -Geography

Description : the energy with in the earth is generated due to -Geography

Last Answer : Most of the energy in the Earth system comes from just a few sources: solar energy, gravity, radioactive decay, and the rotation of the Earth. Solar energy drives many surface processes such as winds, currents, the hydrologic cycle, and the overall climate system.

Amount of energy generated during aerobic respiration. -Biology

Description : Amount of energy generated during aerobic respiration. -Biology

Last Answer : answer:

How is the energy of the sun generated ?

Description : How is the energy of the sun generated ?

Last Answer : The energy of the sun is generated by the method of nuclear fusion.

In main sequence stage how is energy generated in a star's core?

Description : In main sequence stage how is energy generated in a star's core?

Last Answer : Stars get their energy from nuclear fusion; in a main-sequencestar, mainly, hydrogen-1 is fused into helium-4.

What is The energy that is generated and measured by heat?

Description : What is The energy that is generated and measured by heat?

Last Answer : Feel Free to Answer

What is the heat and energy of a star is generated by?

Description : What is the heat and energy of a star is generated by?

Last Answer : The energy in a star is generated by nuclear fusion.

Consider the following statements: 2. In India, the maximum part of electric energy is generated by the hydroelectric plants. 3. In India, the maximum part of electric energy is generated by the thermal power plants. 4. Neyveli Lignite Corporation Ltd. is located in Tamil Nadu. Which of these statements is/are correct? [CPO AC 2003] (a) 2 and 3 (b) 1 and 3 (c) 2 only (d) 3 only

Description : Consider the following statements: 2. In India, the maximum part of electric energy is generated by the hydroelectric plants. 3. In India, the maximum part of electric energy is generated by the thermal power plants. 4. Neyveli Lignite ... CPO AC 2003] (a) 2 and 3 (b) 1 and 3 (c) 2 only (d) 3 only

Last Answer : Ans: (a)

The energy yield from complete oxidation of products generated by second reaction cycle of β-oxidation of palmitoyl CoA will be (A) 5 ATP (B) 12 ATP (C) 17 ATP (D) 34 ATP

Description : The energy yield from complete oxidation of products generated by second reaction cycle of β-oxidation of palmitoyl CoA will be (A) 5 ATP (B) 12 ATP (C) 17 ATP (D) 34 ATP

Last Answer : Answer : D

Energy is continuously generated in the sun due to _______. (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Description : Energy is continuously generated in the sun due to _______. (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Last Answer : (1) Nuclear fusion Explanation: Nuclear fusion is a nuclear reaction in which two or more atomic nuclei come very close and then collide at a very high speed and join to form a new type of atomic nucleus.

The energy consumed by an AC motor, as strictly reactive power, is _____________. A. used to do mechanical work B. used to establish the magnetic field of the motor C. lost as heat generated by the windings D. lost in doing work to turn the motor itself

Description : The energy consumed by an AC motor, as strictly reactive power, is _____________. A. used to do mechanical work B. used to establish the magnetic field of the motor C. lost as heat generated by the windings D. lost in doing work to turn the motor itself

Last Answer : Answer: B

The energy generated through coal commercially is called

Description : The energy generated through coal commercially is called

Last Answer : Thermal Energy

The device which is used to store the heat generated by radiation of solar energy is called

Description : The device which is used to store the heat generated by radiation of solar energy is called

Last Answer : solar collector.

Zero permeability/permittivity implies which state? a) No ions are allowed in the medium b) No current is generated in the medium c) No magnetic or electric energy is permitted in the medium d) No resistivity

Description : Zero permeability/permittivity implies which state? a) No ions are allowed in the medium b) No current is generated in the medium c) No magnetic or electric energy is permitted in the medium d) No resistivity

Last Answer : c) No magnetic or electric energy is permitted in the medium

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal? (a) 1 (b) 2 (c) 30 (d) 57

Description : How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal? (a) 1 (b) 2 (c) 30 (d) 57

Last Answer : d) 57

Thermit welding uses the following energy source. (A) Electrical energy (B) Chemical energy (C) Energy of high velocity electrons (D) Heat generated by friction

Description : Thermit welding uses the following energy source. (A) Electrical energy (B) Chemical energy (C) Energy of high velocity electrons (D) Heat generated by friction

Last Answer : (B) Chemical energy

Which one is not an energy consumption benchmark parameter? a) kcal/kWh of electricity generated b) kg/ oC. c) kW/ton of refrigeration d) kWh/kg of yarn

Description : Which one is not an energy consumption benchmark parameter? a) kcal/kWh of electricity generated b) kg/ oC. c) kW/ton of refrigeration d) kWh/kg of yarn

Last Answer : b) kg/ oC.

A current of 5 amps passes through a 10 ohm resistor. How many joules of energy will be generated by this resistor in 2 seconds?

Description : A current of 5 amps passes through a 10 ohm resistor. How many joules of energy will be generated by this resistor in 2 seconds? 

Last Answer : ANSWER: 500 JOULES

Write how energy can be stored or generated in each of following : i) solar cell ii) geothermal energy iii) hydrogen energy in biomass.

Description : Write how energy can be stored or generated in each of following : i) solar cell ii) geothermal energy iii) hydrogen energy in biomass.

Last Answer : i) Solar cell : Energy can be stored:  1. Storage Battery is used to store electricity.  OR   Energy can be generated  1. Directly Conversion:   a) By use of P.V Cell ( ... fuels in engines:-  3. The biomass is subjected to fermentation process to obtain a gaseous fuel called biomass

Which one of the following statements best defines procd. The process by which products and services required for the project are acquired.urement? a. A technique to establish the best approach for obtaining the resources for the project. b. A group of interrelated resources and activities that transform inputs into outputs. c. The description of the purpose, form and components to support delivery of a product.

Description : Which one of the following statements best defines procurement? a. A technique to establish the best approach for obtaining the resources for the project. b. A group of interrelated resources and ... product. d. The process by which products and services required for the project are acquired.

Last Answer : d. The process by which products and services required for the project are acquired.

Which one of the following statements best defines procurement? a. A technique to establish the best approach for obtaining the resources for the project. b. A group of interrelated resources and activities that transform inputs into outputs. c. The description of the purpose, form and components to support delivery of a product. d. The process by which products and services required for the project are acquired.

Description : Which one of the following statements best defines procurement?  a. A technique to establish the best approach for obtaining the resources for the project.  b. A group of interrelated resources and ... product.  d. The process by which products and services required for the project are acquired.

Last Answer : d. The process by which products and services required for the project are acquired.

Consider the following features/factors: 1. Projects are of the non-repetitive type 2. Time required need not be known 3. Time required is known precisely 4. Events have been established for planning 5. Emphasis is given to activities of project PERT is preferred for planning because of (A) 1, 2 and 4 (B) 3, 4 and 5 (C) 1, 3 and 4 (D) 1, 2 and 5

Description : Consider the following features/factors: 1. Projects are of the non-repetitive type 2. Time required need not be known 3. Time required is known precisely 4. Events have been established for planning 5. Emphasis is given to ... and 4 (B) 3, 4 and 5 (C) 1, 3 and 4 (D) 1, 2 and 5

Last Answer : (A) 1, 2 and 4

While scheduling a project by C.P.M. (A) A project is divided into various activities (B) Required time for each activity is established (C) Net work is drawn by connecting the activities and the events (D) All the above

Description : While scheduling a project by C.P.M. (A) A project is divided into various activities (B) Required time for each activity is established (C) Net work is drawn by connecting the activities and the events (D) All the above

Last Answer : (D) All the above

Mobilization advance up to 10% of the cost of work is given to a contractor (A) On commencement of work at site for payment of loan taken by him (B) For the purchase of construction materials (C) For the payment of advances to labour and other staff (D) For all activities required to start the work at site on finalization of the contract document

Description : Mobilization advance up to 10% of the cost of work is given to a contractor (A) On commencement of work at site for payment of loan taken by him (B) For the purchase of construction ... staff (D) For all activities required to start the work at site on finalization of the contract document

Last Answer : (D) For all activities required to start the work at site on finalization of the contract document

For providing a raft foundation, the following activities are involved 1. Ramming the foundation bed 2. Excavation of the soil upto required depth 3. Laying the reinforcement over the foundation bed 4. Curing the cement concrete placed over reinforcement 5. Pouring the cement concrete over the reinforcement The correct sequence is (A) 1, 2, 3, 4, 5 (B) 5, 4, 3, 2, 1 (C) 2, 1, 3, 5, 4 (D) 3, 2, 5, 1,

Description : For providing a raft foundation, the following activities are involved 1. Ramming the foundation bed 2. Excavation of the soil upto required depth 3. Laying the reinforcement over the foundation bed 4. Curing the cement concrete placed over ... 2, 1 (C) 2, 1, 3, 5, 4 (D) 3, 2, 5, 1, 4

Last Answer : Answer: Option C

A bar chart is commonly used because (a) It is simple to draw and easy to understand (b) It indicates at a glance the overall progress of the project (c) It shows critical and non-critical activities (d) It incorporates uncertainties for delay in estimation of time required for completion of activities.

Description : A bar chart is commonly used because (a) It is simple to draw and easy to understand (b) It indicates at a glance the overall progress of the project (c) It shows critical ... critical activities (d) It incorporates uncertainties for delay in estimation of time required for completion of activities.

Last Answer : (a) It is simple to draw and easy to understand

In a PERT network, slack time is _____. (a) The end point that represents the completion of a major activity (b) The time or resources required to progress from one event to another (c) The amount of time an individual activity can be delayed without delaying the whole Project (d) The longest or most time-consuming sequence of events and activities

Description : In a PERT network, slack time is _____. (a) The end point that represents the completion of a major activity (b) The time or resources required to progress from one event to another ( ... without delaying the whole Project (d) The longest or most time-consuming sequence of events and activities 

Last Answer : (c) The amount of time an individual activity can be delayed without delaying the whole Project 

Dynamic approach to teaching means (A) Teaching should be forceful and effective (B) Teachers should be energetic and dynamic (C) The topics of teaching should not be static, but dynamic (D) The students should be required to learn through activities

Description : Dynamic approach to teaching means (A) Teaching should be forceful and effective (B) Teachers should be energetic and dynamic (C) The topics of teaching should not be static, but dynamic (D) The students should be required to learn through activities

Last Answer : (D) The students should be required to learn through activities

State the types of radioactive waste generated in a nuclear power station. Explain the methods employed for their disposal.

Description : State the types of radioactive waste generated in a nuclear power station. Explain the methods employed for their disposal.

Last Answer : Types of radioactive waste: The waste produced in nuclear power plant is in the form of solid, liquid & gases, 1. Solid Waste Disposal:-  Solid wastes removed from the reactor are very ... are measured. If it is safe then released to atmosphere at high level through large height chimney.

Explain how sinusoidal AC voltage is generated by using simple one loop generator.

Description : Explain how sinusoidal AC voltage is generated by using simple one loop generator.

Last Answer : An electric current produced by means of electrical machine is known as generator which converts mechanical energy into electrical energy. When conductor cuts the magnetic flux, emf induced in it. (Faraday' ... upon position of armature. The nature of emf is alternating as shown by the waveform.