Conversion of Heat into electric energy is achieved by using

Conversion of Heat into electric energy is achieved by using
by

1 Answer

Answer :

Thermocouple
by

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Conversion of heat into electrical er is achieved by using – (1) Ammeter (2) Hydrometer (3) Voltmeter (4) Thermocouple

Description : Conversion of heat into electrical er is achieved by using – (1) Ammeter (2) Hydrometer (3) Voltmeter (4) Thermocouple

Last Answer : (4) Thermocouple Explanation: Thermoelectric generators convert thermal energy into electricity by using heat from the body - or any object with a temperature gradient - as their energy source. ... energy into electricity. Bismuth telluride and its alloys are commonly used in thermocouples.

Conversion of heat into electrical er is achieved by using : (1) Ammeter (2) Hydrometer (3) Voltmeter (4) Thermocouple

Description : Conversion of heat into electrical er is achieved by using : (1) Ammeter (2) Hydrometer (3) Voltmeter (4) Thermocouple

Last Answer : Thermocouple

A space velocity of 5 hr -1 means that (A) Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour (B) After every 5 hours, reactor is being filled with the feed (C) Cent per cent conversion can be achieved in at least 5 hours (D) A fixed conversion of a given batch of feed takes 5 hours

Description : A space velocity of 5 hr -1 means that (A) Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour (B) After every 5 hours, reactor is being filled with the feed ... be achieved in at least 5 hours (D) A fixed conversion of a given batch of feed takes 5 hours

Last Answer : (A) Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour

Above conversion can be achieved by

Description : Above conversion can be achieved by

Last Answer : Above conversion can be achieved by A. `NH_2-NH_(2)//NaOH` B. `Zn-Hg//HCl` C. `LiAlH_(4)` D. `NaBH_(4)`

Above conversion can be achieved by

Description : Above conversion can be achieved by

Last Answer : Above conversion can be achieved by A. `NH_2-NH_(2)//NaOH` B. `Zn-Hg//HCl` C. `LiAlH_(4)` D. `NaBH_(4)`

In Lurgi coal gasifier, (A) Coking coals cannot be used (B) Low carbon conversion efficiency is achieved (C) Entrainment of solids is higher (D) Larger quantity of coal can be processed

Description : In Lurgi coal gasifier, (A) Coking coals cannot be used (B) Low carbon conversion efficiency is achieved (C) Entrainment of solids is higher (D) Larger quantity of coal can be processed

Last Answer : (D) Larger quantity of coal can be processed

Conversion achieved in HNO3 synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by (A) Decreasing the pressure (B) Decreasing the temperature (C) Increasing the temperature (D) None of these

Description : Conversion achieved in HNO3 synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by (A) Decreasing the pressure (B) Decreasing the temperature (C) Increasing the temperature (D) None of these

Last Answer : (C) Increasing the temperature

In the Lurgi coal gasifier (A) Coking coals cannot be used (B) Low carbon conversion efficiency is achieved (C) Entrainment of solids is higher (D) Large quantity of coal can be processed

Description : In the Lurgi coal gasifier (A) Coking coals cannot be used (B) Low carbon conversion efficiency is achieved (C) Entrainment of solids is higher (D) Large quantity of coal can be processed

Last Answer : (D) Large quantity of coal can be processed

The percentage share of electrical power from solar energy in the total electric power generation from all renewable energy sources sought to be achieved by Indian government by the year 2022, is (A) ~ 57.1% (B) ~ 65.5% (C) ~ 47.5% (D) ~ 75%

Description : The percentage share of electrical power from solar energy in the total electric power generation from all renewable energy sources sought to be achieved by Indian government by the year 2022, is (A) ~ 57.1% (B) ~ 65.5% (C) ~ 47.5% (D) ~ 75% 

Last Answer : Answer: A

In a diesel engine the high temperature needed to ignite the fuel is achieved by – (1) using heat from exhaust (2) the battery (3) compressing air in the cylinders (4) an electrical spark

Description : In a diesel engine the high temperature needed to ignite the fuel is achieved by – (1) using heat from exhaust (2) the battery (3) compressing air in the cylinders (4) an electrical spark

Last Answer : (3) compressing air in the cylinders Explanation: Diesel engines use the heat of compressed air to ignite the fuel (intakes air, compresses it, then injects fuel). Diesel engines need high compression ratios to generate the high temperatures required for fuel auto ignition.

Fuel economy in furnaces can be achieved by (A) Using oxygen enriched combustion air (B) Preheating the combustion air (C) Reducing the heat loss through furnace openings & doors (D) All (A), (B) and (C

Description : Fuel economy in furnaces can be achieved by (A) Using oxygen enriched combustion air (B) Preheating the combustion air (C) Reducing the heat loss through furnace openings & doors (D) All (A), (B) and (C

Last Answer : (D) All (A), (B) and (C

Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature? (A) Calorific value of the fuel (B) Flame temperature achieved (C) Speed of combustion of fuel (D) Heat transfer rate to the stock in the furnace

Description : Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature? (A) Calorific value of the fuel (B) Flame temperature achieved (C) Speed of combustion of fuel (D) Heat transfer rate to the stock in the furnace

Last Answer : (A) Calorific value of the fuel

In a diesel engine the high temperature needed to ignite the fuel is achieved by (1) using heat from exhaust (2) the battery (3) compressing air in the cylinders (4) an electrical spark

Description : In a diesel engine the high temperature needed to ignite the fuel is achieved by (1) using heat from exhaust (2) the battery (3) compressing air in the cylinders (4) an electrical spark

Last Answer : compressing air in the cylinders

Electrolytic reduction cell used for conversion of calcined Al2O3to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to (A) Achieve very high purity of aluminium (99.9%) (B) Keep the electrolyte in liquid condition by the generation of heat (C) Electrolytically dissociate alumina (D) Both (B) & (C)

Description : Electrolytic reduction cell used for conversion of calcined Al2O3to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to (A) Achieve very high ... by the generation of heat (C) Electrolytically dissociate alumina (D) Both (B) & (C)

Last Answer : (D) Both (B) & (C)

Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by (A) Keeping the heat transfer surface clean (B) Enhancing the fluid pumping rate (C) Increasing the tube length (D) None of these

Description : Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by (A) Keeping the heat transfer surface clean (B) Enhancing the fluid pumping rate (C) Increasing the tube length (D) None of these

Last Answer : (A) Keeping the heat transfer surface clean

Conversion of chemical energy into electrical energy occurs in - (1) Atomic bombs (2) Dynamo (3) A battery (4) Electric heaters

Description : Conversion of chemical energy into electrical energy occurs in - (1) Atomic bombs (2) Dynamo (3) A battery (4) Electric heaters

Last Answer : (3) A battery Explanation: A battery is a form of chemical energy that can be converted to electrical energy. it is a device consisting of one or more electrochemical cells which performs this action. The first battery (or "voltaic pile") was invented in 1800 by Alessandro Volta.

Conversion of chemical energy into electrical energy occurs in – (1) atomic bombs (2) dynamo (3) a battery (4) electric heaters

Description : Conversion of chemical energy into electrical energy occurs in – (1) atomic bombs (2) dynamo (3) a battery (4) electric heaters

Last Answer : (3) a battery Explanation: Conversion of chemical energy into electrical energy occurs in battery.

Conversion of chemical energy into electrical energy occurs in (1) Atomic bombs (2) Dynamo (3) A battery (4) Electric heaters

Description : Conversion of chemical energy into electrical energy occurs in (1) Atomic bombs (2) Dynamo (3) A battery (4) Electric heaters

Last Answer : A battery

In laser printers, printing is achieved by deflecting laser beam on to __________ surface of a drum. A. Magnetic B. Electric C. Photosensitive D. None of the Above

Description : In laser printers, printing is achieved by deflecting laser beam on to __________ surface of a drum. A. Magnetic B. Electric C. Photosensitive D. None of the Above

Last Answer : C. Photosensitive

With high frequency electric current hardening is achieved and is called as a) case hardening b) induction hardeningc) surface hardening d) metal hardening

Description : With high frequency electric current hardening is achieved and is called as a) case hardening b) induction hardeningc) surface hardening d) metal hardening

Last Answer : b) induction hardening

According to Gauss' Law, the magnitude of the electric field is zero everywhere inside a conductor if: w) electrostatic equilibrium is achieved x) the surface is a metal y) the conductor is moving z) the conductor is a non-Gaussian surface

Description : According to Gauss' Law, the magnitude of the electric field is zero everywhere inside a conductor if: w) electrostatic equilibrium is achieved x) the surface is a metal y) the conductor is moving z) the conductor is a non-Gaussian surface

Last Answer : ANSWER: W -- ELECTROSTATIC EQUILIBRIUM IS ACHIEVED

The enormous amount of energy released in an explosion of an atomic bomb is due to the - (1) conversion of mass into energy (2) conversion of chemical energy into heat energy (3) conversion of mechnical energy into nuclear energy (4) conversion of neutrons into protons

Description : The enormous amount of energy released in an explosion of an atomic bomb is due to the - (1) conversion of mass into energy (2) conversion of chemical energy into heat energy (3) conversion of mechnical energy into nuclear energy (4) conversion of neutrons into protons

Last Answer : (4) conversion of neutrons into protons Explanation: The enormous amount of energy released in an explosion of an atomic bomb is due to the converson of neutrons into protons. When, a neutron strikes ... , each of which is a nucleus with about half the protons and neutrons of the original nucleus.

Which effect of heat is used in conversion of heat energy into mechanical energy?

Description : Which effect of heat is used in conversion of heat energy into mechanical energy?

Last Answer : Change of liquid to gaseous state of matter is most in designing heat engines.

It states that mass is a commodity that can neither be heated nor destroyed with the exception of nuclear processes where the conversion of mass into energy is a fundamental principle  a. Law of Conservation of Mass  b. Law of Conservation of Energy  c. Law of Conservation of Power  d. Law of Conservation of Heat

Description : It states that mass is a commodity that can neither be heated nor destroyed with the exception of nuclear processes where the conversion of mass into energy is a fundamental principle  a. Law of ... Conservation of Energy  c. Law of Conservation of Power  d. Law of Conservation of Heat

Last Answer : Law of Conservation of Mass

The enormous amount of energy released in an explosion of an atmoic bomb is due to the (1) conversion of mass into energy (2) conversion of chemical energy into heat energy (3) conversion of mechnical energy into nuclear energy (4) conversion of neutrons into protons

Description : The enormous amount of energy released in an explosion of an atmoic bomb is due to the (1) conversion of mass into energy (2) conversion of chemical energy into heat energy (3) conversion of mechnical energy into nuclear energy (4) conversion of neutrons into protons

Last Answer :  conversion of neutrons into protons

At present level of technology, which of the following method of generating electric power from sea is most advantageous? (A) Tidal power. (B) Ocean thermal energy conversion (C) Ocean currents. (D) Wave power.

Description : At present level of technology, which of the following method of generating electric power from sea is most advantageous? (A) Tidal power. (B) Ocean thermal energy conversion (C) Ocean currents. (D) Wave power.

Last Answer : Ans: A At present level of technology, tidal power for generating electric power from sea is most advantageous because of constant availability of tidal power.

How with alloying of steel it is possible to a achieve properties which can not be achieved with heat treatment ?

Description : How with alloying of steel it is possible to a achieve properties which can not be achieved with heat treatment ?

Last Answer : A prerequisite to the hardening of steels is that martensite should be formed on cooling, but this can only be achieved if the rate of cooling is great enough to suppress the formation of pearlite or bainite and in plain carbon steels this can be achieved by quenching relatively small specimens

A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time (A) t = 283 s (B) t = 356 s (C) t = 400 s (D) t = 800 s

Description : A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The ... = 283 s (B) t = 356 s (C) t = 400 s (D) t = 800 s

Last Answer : (D) t = 800 s

The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by (A) Painting the surface black (B) Painting the surface white (with aluminium paint) (C) Giving the surface a mirror finish (D) Roughening the surface

Description : The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by (A) Painting the surface black (B) ... white (with aluminium paint) (C) Giving the surface a mirror finish (D) Roughening the surface

Last Answer : (B) Painting the surface white (with aluminium paint)

Maximum heat transfer rate is achieved in __________ flow. (A) Co-current (B) Counter-current (C) Turbulent (D) Laminar

Description : Maximum heat transfer rate is achieved in __________ flow. (A) Co-current (B) Counter-current (C) Turbulent (D) Laminar

Last Answer : (C) Turbulen

The sterilisation of Gutta Percha is achieved by: a. Heat. b. Chemical sterilisation. c. Flame. d. Boiling. e. Autoclave.

Description : The sterilisation of Gutta Percha is achieved by: a. Heat. b. Chemical sterilisation. c. Flame. d. Boiling. e. Autoclave.

Last Answer : b. Chemical sterilisation.

The sterilisation of Gutta Percha is achieved by: A. Heat B. Chemical sterilisation C. Flame D. Boiling E. Autoclave

Description : The sterilisation of Gutta Percha is achieved by:  A. Heat  B. Chemical sterilisation  C. Flame  D. Boiling  E. Autoclave 

Last Answer : B. Chemical sterilisation 

The following is the correct order of energy conversion in thermal power plants a. Chemical energy – Mechanical energy – Electrical energy b. Mechanical energy – Chemical energy – Electrical energy c. Wind energy – Mechanical energy – Electrical energy d. Heat energy – Electrical energy – Mechanical energy.

Description : The following is the correct order of energy conversion in thermal power plants a. Chemical energy - Mechanical energy - Electrical energy b. Mechanical energy - Chemical energy - Electrical energy c ... - Mechanical energy - Electrical energy d. Heat energy - Electrical energy - Mechanical energy.

Last Answer : a. Chemical energy – Mechanical energy – Electrical energy

Zeroth law of thermodynamics  (a) deals with conversion of mass and energy  (b) deals with reversibility and irreversibility of process  (c) states that if two systems are both in equilibrium with a third system, they are in thermal equilibrium with each other  (d) deals with heat engines  (e) does not exist.

Description : Zeroth law of thermodynamics  (a) deals with conversion of mass and energy  (b) deals with reversibility and irreversibility of process  (c) states that if two systems are both in equilibrium with a ... in thermal equilibrium with each other  (d) deals with heat engines  (e) does not exist.

Last Answer : Answer : c

Encryption of data is important to ensure its privacy. It is most commonly achieved by using a ____. A. public-key encryption B. private-key encryption C. password-key encryption D. character set encryption

Description : Encryption of data is important to ensure its privacy. It is most commonly achieved by using a ____. A. public-key encryption B. private-key encryption C. password-key encryption D. character set encryption

Last Answer : A. public-key encryption

Truly effective communication: 1. Depends on using multiple channels 2. Depends on selecting the right method for each message and avoiding duplication, since everyone is overloaded with information 3. Cannot depend solely on non-verbal signals which might be misunderstood 4. Can only be achieved by communication professional 5. a, b and c

Description : Truly effective communication: 1. Depends on using multiple channels  2. Depends on selecting the right method for each message and avoiding duplication, since  everyone is overloaded with information  3. ... misunderstood  4. Can only be achieved by communication professional  5. a, b and c

Last Answer : 5. a, b and c

________ can beachievedbyusing multiplexing; ______ canbe achieved by using spreading. A) Efficiency; privacy and antijamming B) Privacyand antijamming;efficiency C) Privacyand efficiency; antijamming D) Efficiency and antijamming; privacy

Description : ________ can beachievedbyusing multiplexing; ______ canbe achieved by using spreading. A) Efficiency; privacy and antijamming B) Privacyand antijamming;efficiency C) Privacyand efficiency; antijamming D) Efficiency and antijamming; privacy

Last Answer : Efficiency; privacy and antijammin

The best visual compression quality is achieved using A. DCT B. Wavelets C. Dolby D. Fourier transform

Description : The best visual compression quality is achieved using A. DCT B. Wavelets C. Dolby D. Fourier transform

Last Answer : B. Wavelets

A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown can BEST be achieved by: A. Hand burnishing B. Mechanical burnishing C. Using finishing burs and points to remove the enamel margins on the tooth D. Making a new impression and remaking the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

Description : A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown ... the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

Last Answer : D. Making a new impression and remaking the crown

In the case of parallelization, Amdahl's law states that if P is the proportion of a program that can be made parallel and (1-P) is the proportion that cannot be parallelized, then the maximum speed-up that can be achieved by using N processors is: (A) 1/((1-P)+N.P) (B) 1/((N-1)P+P) (C) 1/((1-P)+P/N) (D) 1/(P+(1-P)/N)

Description : In the case of parallelization, Amdahl's law states that if P is the proportion of a program that can be made parallel and (1-P) is the proportion that cannot be parallelized, then the maximum speed-up that can be achieved by using N processors is ... ((N-1)P+P) (C) 1/((1-P)+P/N) (D) 1/(P+(1-P)/N)

Last Answer : (C) 1/((1-P)+P/N)

Kelvin-Planck’s law deals with  A. conservation of work  B. conservation of heat  C. conversion of heat into work  D. conversion of work into heat

Description : Kelvin-Planck’s law deals with  A. conservation of work  B. conservation of heat  C. conversion of heat into work  D. conversion of work into heat

Last Answer : Answer: C

Kelvin Planck’s law deals with  (a) conservation of heat  (b) conservation of work  (c) conversion of heat into work  (d) conversion fo work into heat  (e) conservation of mass.

Description : Kelvin Planck’s law deals with  (a) conservation of heat  (b) conservation of work  (c) conversion of heat into work  (d) conversion fo work into heat  (e) conservation of mass.

Last Answer : Answer : c

Electric charge separation or quantum conversion occurs at

Description : Electric charge separation or quantum conversion occurs at

Last Answer : Electric charge separation or quantum conversion occurs at A. Antenna molecuels B. Thylakoid membrane C. Reaction center D. Stroma

Buying an Electric Car Conversion Kit?

Description : Buying an Electric Car Conversion Kit?

Last Answer : A large variety of electric car conversion kits are available online. They contain everything you need to convert your vehicle, but make sure you read the site instructions carefully and choose ... throughout the conversion process, you will save money and reduce the possibility of losing parts.

Maximum size reduction in a fluid energy mill is achieved by (A) Compression (B) Interparticle attrition (C) Cutting (D) Impact

Description : Maximum size reduction in a fluid energy mill is achieved by (A) Compression (B) Interparticle attrition (C) Cutting (D) Impact

Last Answer : (B) Interparticle attrition

A thermoelectric engine which consists of two dissimilar electric conductors connected at two junctions maintained at different temperatures, converts (a) Electric energy into heat energy [IES-2006] (b) Heat energy into electric energy (c) Mechanical work into electric energy (d) Electric energy into mechanical work

Description : A thermoelectric engine which consists of two dissimilar electric conductors connected at two junctions maintained at different temperatures, converts (a) Electric energy into heat energy [IES-2006] (b ... energy (c) Mechanical work into electric energy (d) Electric energy into mechanical work  

Last Answer : (b) Heat energy into electric energy  

Heat energy is converted into electrical energy a. solar cells b. thermocouples c. electric generators d. none

Description : Heat energy is converted into electrical energy a. solar cells b. thermocouples c. electric generators d. none

Last Answer : b. thermocouples

A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is - 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be: (A) 5°C (B) 10°C (C) 20°C (D) 100°C

Description : A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is - 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal ... rise after a conversion of 0.5 will be: (A) 5°C (B) 10°C (C) 20°C (D) 100°C

Last Answer : (B) 10°C

The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m3 is fed to the reactor at the rate of 0.01 m3 /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k) is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature)) (A) 400 (B) 500 (C) 600 (D) 1000

Description : The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m3 is fed to the reactor at the rate of 0.01 m3 /s and at a temperature of 500 K. If the exit ... /kmole. K (may be assumed to be independent of temperature)) (A) 400 (B) 500 (C) 600 (D) 1000

Last Answer : (C) 600