List out energy conservation techniques to be adopted to reduce losses in the induction motor.

List out energy conservation techniques to be adopted to reduce losses in the induction motor.
by

1 Answer

Answer :

Following are the list of energy conservation techniques in electrical motors: 

1) Reduction in iron losses by using low loss silicon steel core material laminated to thinner dimension. 2) Using bigger length dimension (longer cores) to increase the area of magnetic flux due to which the flux density is lowered to reduce the eddy currents & hysteresis losses. 3) Lowering the air gap that leads to reduction of the reluctance of the magnetic circuit & hence lower magnetizing current to produce the same flux density. 4) Using low resistance copper bars in rotors instead of high resistance aluminum bars leading to reduction in the copper losses in rotor. 5) Use very smooth surface finishing of stator/rotor (air gap) leading to low windage losses 6) Use high quality bearings to reduce the frictional losses. 7) Use smaller diameter fans to reduce fan load (as above measures lead to lower heat production in motors & hence reduced cooling requirements). 8) By minimizing idle & redundant running. 9) By matching motor rating as per required load. 10) By Phase balancing. 11) By improving power quality. 12) Operating motor in star mode at light load.

by

Related questions

Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses.

Description : Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses. 

Last Answer : Energy conservation techniques to reduce commercial losses:  1. Mitigation of Power Theft: Power theft being the most important issue which all of the service providing utilities ... agricultural sector. Prepaid meters may prove effective measures against unauthorized abstraction of energy. 

Explain the following energy conservation techniques: (i) By reducing I2R losses in Trans. system (ii) By optimizing distribution voltage.

Description : Explain the following energy conservation techniques: (i) By reducing I2R losses in Trans. system (ii) By optimizing distribution voltage.

Last Answer : i) By reducing I2R losses in Trans:  1. Opting for low resistance All Aluminum Alloy conductors (AAAC) in place of conventional aluminum cored steel reinforced (ACSR) lines. 2. ... line power losses. Thus maintaining the voltages at the specified levels leads to energy savings/conservation.

Explain following techniques related to energy conservation in transmission and distribution system. (i) By balancing phase currents (ii) Variable technical losses (I2R losses).

Description : Explain following techniques related to energy conservation in transmission and distribution system. (i) By balancing phase currents (ii) Variable technical losses (I2R losses).

Last Answer : (i) Balancing Phase currents: Proper (healthy balanced) three phase loads always draw equal currents in all lines but single phase loads in the 3 phase 4 wire system or loads connected between two ... . 11) Minimize I2R losses. 12) Balance the load currents. 13) Regulate the system voltages.

Why energy conservation techniques should be adopted in transformers even though its efficiency is 90%?

Description : Why energy conservation techniques should be adopted in transformers even though its efficiency is 90%? 

Last Answer : Reason for energy conservation techniques should be adopted in transformers even though its efficiency is 90% : Transformer performance depends on its efficiency. Transformers used in real-time ... improve the efficiency of the transformer more than 90% as there are no mechanical losses.

List out the energy conservation equipments related to • Lighting system • Induction motor

Description : List out the energy conservation equipments related to • Lighting system • Induction motor

Last Answer : Energy conservation equipments related to:  1. Lighting System:  1. Luxmeter 2. Power Analyzer 3. Voltage Stabilizer 4. Electronic Ballast 5. LED Lamp 6. Control gear or Regulators 7. ... 2. Power Analyzer 3. Digital Voltmeter 4. Digital Ammeter 5. Wattmeter 6. Different types of starter

List the energy conservation technique in induction motor.

Description : List the energy conservation technique in induction motor. 

Last Answer : Following are the list of energy conservation techniques in electrical motors: 1) Reduction in iron losses by using low loss silicon steel core material laminated to thinner dimension. 2) Using bigger length ... at light load. 13) By rewinding in induction motor 14) By motor survey

Suggest the energy conservation techniques in following cases : (i) Motor is running with 70% loaded condition. (ii) Motor is continuously loaded at 50%. (iii) Motor runs with 30% loaded condition but sometimes rises to 50% loading condition. (iv) Motor runs continuously under no-load condition.

Description : Suggest the energy conservation techniques in following cases : (i) Motor is running with 70% loaded condition. (ii) Motor is continuously loaded at 50%. (iii) Motor runs with 30% loaded condition but sometimes rises to 50% loading condition. (iv) Motor runs continuously under no-load condition.

Last Answer : Following are the suggestion the energy conservation techniques in following cases :  (i) Motor is running with 70% loaded condition: Use APFC or IPFC for better power factor improvement. Use ... If possible use low capacity motor for above condition. If possible switch off the motor.

List out the energy conservation techniques in Fans.

Description : List out the energy conservation techniques in Fans.

Last Answer : Following are energy conservation techniques in Fans : Use the electronic regulators instead of conventional regulator. The fan used at low speed instead of high speed. Adjust the direction of the ceiling ... Day / 1000 = Daily Kilowatt-hour (kWh) Consumption (1 kilowatt [kw] = 1000 watts)

Explain energy conservation technique in induction motor by improving mechanical power and transmission efficiency.

Description : Explain energy conservation technique in induction motor by improving mechanical power and transmission efficiency.

Last Answer : Energy Conservation Technique in Induction Motor: To improve the mechanical power and transmission efficiency, proper selection of belt drives and gear drives suitable for particular application is ... . Energy conservation is achieved by using more efficient gears for particular applications. 

Explain energy conservation technique in induction motor by minimizing idle and redundant running of motor.

Last Answer : Energy conservation technique in induction motor by minimizing idle and redundant running of motor: 1) Loss of energy as the no load power drawn is approximately about 12% to 16% of rated ... to unnecessary line losses. 4) Reduction in overall system energy efficiency over period of time.

Explain energy conservation technique “by improving power quality” for induction motor.

Description : Explain energy conservation technique “by improving power quality” for induction motor.

Last Answer : Energy conservation method in induction motor by improving power quality: Electrical energy can be conserved by improving the power quality. It can be achieved by avoiding voltage unbalance, maintaining ... losses can be minimized by using harmonic filter thus reducing the harmonics in the system.

State the opportunities for energy conservation techniques in transformers.

Description : State the opportunities for energy conservation techniques in transformers.

Last Answer : Opportunities for energy conservation techniques in transformers: Most of the energy loss that occurs in transformer is due to heat or vibration in the core that also reduces life of ... 9. Use better quality insulation materials to improve overload capacity and decrease dielectric leakages. 

Explain any two energy conservation techniques in fan.

Description : Explain any two energy conservation techniques in fan.

Last Answer : Following are energy conservation techniques in Fans : 1) Use the electronic regulators instead of conventional regulator: Function of regulator is to control the speed of the fan. The conventional regulators ... 't forget to properly maintain your electric fan and keep it in good working order. 

Explain the following Energy conservation methods of electrical motor : (a) Rewinding of motors (b) Operating in star mode

Description : Explain the following Energy conservation methods of electrical motor : (a) Rewinding of motors (b) Operating in star mode

Last Answer : Energy conservation methods of an electric motor:  (a) Rewinding of motors: i) During rewinding by preserving the original winding characteristics (material quality, design and structure). It is ... in the lines also reduces leading to lower copper losses in motor and decrease line losses.

State the need of energy conservation in electrical motor.

Description : State the need of energy conservation in electrical motor.

Last Answer : Need of energy conservation in Electrical motors: 1. Induction motors are used as electrical drives in industrial, commercial and residential sectors. 2. Considering all industrial applications, 70% of ... system. 8. To adopt advanced technology in design and to use better quality materials.

Describe the following energy conservation methods of electrical motor. i) By motor survey ii) By matching loads with motor rating

Description : Describe the following energy conservation methods of electrical motor. i) By motor survey ii) By matching loads with motor rating

Last Answer : Energy conservation methods of electrical motor:  1) By Motor Survey: Large industries have a massive population of LT motors. Load survey of LT motors can be taken-up methodically to ... -speed motors, eddy-current couplings, fluid couplings, and solid-state electronic variable speed drives.

With neat diagram explain use of “reactive power controller” to reduce technical losses in transmission and distribution system.

Description : With neat diagram explain use of “reactive power controller” to reduce technical losses in transmission and distribution system.

Last Answer : Reactive power compensation in Transmission and Distribution systems: The reactive power is present in lines due to the reactive loads and device/ component reactance. This leads to heavy currents for active ... switched to the line as per the requirement of lagging or leading reactive VA. 

List out the different technical losses that takes place in Transmission and Distribution system.

Description : List out the different technical losses that takes place in Transmission and Distribution system.

Last Answer : Different technical losses that takes place in Transmission and Distribution system: 1) Losses due to random growth of sub transmission &distribution system. planned growth/expansion maintains ... unsatisfactory reactive power compensation. 6) Losses due to poor quality of equipment used. 

Draw and explain power flow diagram of induction motor.

Description : Draw and explain power flow diagram of induction motor.

Last Answer : Power flow diagram of induction motor: 1) Energy flow diagram is a graphical representation of the different power flow paths in which the width of the arrows are proportional to quantity of ... rotor body and bearings. The remaining power then appears as net rotor output mechanical power.

State and explain any four factors governing selection of induction motor.

Description : State and explain any four factors governing selection of induction motor.

Last Answer : The factors governing the selection of Induction motor: 1) Load torque required at normal speed matches with available torque of motor. 2) Break down torque or pull out torque or maximum torque ... If selecting energy efficient motor the cost benefit analysis over the long run must be worked out.

Explain how technical losses can be reduced by use of energy efficient transformer in Transmission and Distribution system.

Description : Explain how technical losses can be reduced by use of energy efficient transformer in Transmission and Distribution system.

Last Answer : .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

State the difference between energy conservation and energy audit.

Description : State the difference between energy conservation and energy audit. 

Last Answer : energy conservation Energy audit It is reducing the growth of energy consumption by avoiding unnecessary usage of energy It is an inspection, survey & analysis of energy flows ... Various measuring instruments, with proper sensing elements are required for the energy audit. 

Define Energy conservation.

Description : Define Energy conservation. 

Last Answer : Energy conservation:  Reduction in the amount of energy consumed in a process or system, or by an organization or society, through economy, elimination of waste, and rational use is referred ... electrical power and to increase the efficiency of every machine and material by minimizing the losses.

With example explain how the replacement of lamps in lighting system contributes for energy conservation?

Description : With example explain how the replacement of lamps in lighting system contributes for energy conservation?

Last Answer : Replacement of lamps in lighting system contributes for energy conservation: i. Replacing incandescent lamps by Compact Fluorescent Lamps (CFL's) ii. Replacing conventional fluorescent lamp by energy efficient fluorescent ... lights in place of all other lamps above as feasible (in terms of cost) 

State how 'parallel operation of transformers' helps in energy conservation.

Description : State how 'parallel operation of transformers' helps in energy conservation.

Last Answer : 'Parallel operation of transformers' helps in energy conservation: The transformers operate near their maximum efficiency at around 70 % to 100 % of their rated loads. For a huge load system drawing highly ... if of higher rating may be put in service while the first one may be switched off.

Explain parallel operation of transformer in context of energy conservation.

Description : Explain parallel operation of transformer in context of energy conservation.

Last Answer : Parallel operation of the transformer in context of energy conservation: The transformers operate near their maximum efficiency around 70 % to 100 % of their rated loads. For huge establishments drawing highly ... thus saving its low load losses. This is done as per the requirements of the loads.

Explain the role of adequate maintenance of lighting system in energy conservation.

Description : Explain the role of adequate maintenance of lighting system in energy conservation.

Last Answer : Role of adequate maintenance of lighting system in energy conservation: Illumination level reduces due to accumulation of dirt on lamps and luminaries. Further as the lamps get older their ... should be conducted to take advantage of energy conservation opportunities as user requirements change.

State salient features of Energy conservation Act-2003

Description : State salient features of Energy conservation Act-2003

Last Answer : Salient features of Energy Conservation Act-2003: i) The Central Government to prepare a National Electricity Policy in consultation with State Governments. ii) Thrust to complete the rural ... to undertake generation and generating companies would be free to take up distribution businesses.

Discuss how power factor tariff results into energy conservation.

Description : Discuss how power factor tariff results into energy conservation.

Last Answer : Power factor tariff results into energy conservation: i) Applying incentives and penalties according to power factor is an effective way, which enables consumer to improve power factor so that he can ... finally leads to reduction in the current drawn by the load and helps for energy conservation.

Discuss the role of replacement of old lamps by new more energy efficient lamps in the conservation of energy.

Description : Discuss the role of replacement of old lamps by new more energy efficient lamps in the conservation of energy.

Last Answer : Role of replacement of old lamps by new more energy efficient lamps in the conservation of energy: i) Replacing incandescent lamps by Compact Fluorescent lamps: High wattage incandescent lamps are ... lamps of same luminous output. By these replacements, much more energy can be conserved.

Explain the need of energy conservation in present scenario.

Description : Explain the need of energy conservation in present scenario.

Last Answer : Need of energy conservation in present scenario: 1. Fossil fuels like coal, oil which have taken no. of years to form and now they are on the verge of depleting soon. 2. In last ... protection and integrated economic and social development. 9. Energy saved is as good as energy generated. 

Draw block diagram of microprocessor based centrallized control equipment of energy conservation and explain it.

Description : Draw block diagram of microprocessor based centrallized control equipment of energy conservation and explain it.

Last Answer : Microprocessor based centralized control equipment of energy conservation: The sensors are employed to get the values/levels of quantities to be controlled like intensity of light, speed of machine ... using the RAM. The requisite signals are given to the control gear for controlling loads. 

What is Time of Day tariff? How it help in energy conservation?

Description : What is Time of Day tariff? How it help in energy conservation?

Last Answer : Time-off-day tariff:- In addition to basic tariff (Maximum Demand Tariff / KVA Maximum Demand Tariff / Load factor tariff /also the tariff in which P.F. of industrial consumer is taken ... the rated load for longer times of the day their overall efficiency gets higher helping to conserve energy.

State any four periodical maintenance which is necessary in transformer to achieve energy conservation.

Description : State any four periodical maintenance which is necessary in transformer to achieve energy conservation.

Last Answer : Periodical maintenance necessary in transformer to achieve energy conservation: Proper periodical maintenance leads in Energy conservation 1) Check Voltage, current, temperature and other parameters. 2) ... breather and silica gel. 5) Check cooling arrangement. 6) Check Insulation resistance.

State the need of energy conservation in transformer.

Description : State the need of energy conservation in transformer. 

Last Answer : Need of energy conservation in transformer: In electrical power system, transformers are used to change the voltage levels of different sections as per the need of economic and efficient operation of ... for some other good reason. Therefore, there is need of energy conservation in transformer.

Explain energy conservation method in lighting system by using installation of separate transformer / servo stabilizer.

Description : Explain energy conservation method in lighting system by using installation of separate transformer / servo stabilizer.

Last Answer : Energy conservation techniques by installation of separate transformer / servo stabilizer: The luminous efficiency of lamps depends upon the voltage applied across the terminals. It gives its best ... the voltage constant in that installation for giving best luminous efficiency of lamps.

Describe the following energy conservation methods of lighting system. i) By replacing lamp sources ii) Using light control gears.

Description : Describe the following energy conservation methods of lighting system. i) By replacing lamp sources ii) Using light control gears.

Last Answer : Energy conservation methods of lighting system:  i) By replacing lamp sources:  Installation of energy efficient fluorescent lamps in place of Conventional fluorescent lamps. Installation of ... (HF) electronic ballasts in place of conventional ballasts which saves energy up to 35%.

State the losses in secondary distribution system.

Description : State the losses in secondary distribution system. 

Last Answer : The losses in secondary distribution system: a) Technical losses: 1. Due to poor voltage 2. Due to unbalance load 3. Due poor quality of transformer & its components 4. Due to poor quality ... of induction type of energy meter. 3. Lack of administration. 4. Energy theft 5. Unmetered supply

Explain scenario of transmission and distribution losses at national level.

Description : Explain scenario of transmission and distribution losses at national level.

Last Answer : Scenario of transmission and distribution losses at national level: i) T & D losses in India are the highest in the world. Inadequate investment in T&D network is one of the main reasons ... . According to planning commission report, the target is to minimize these losses to 18% upto 2018.

State commercial losses in transmission and distribution systems. Also state the remedies for the same.

Description : State commercial losses in transmission and distribution systems. Also state the remedies for the same.

Last Answer : Following are the commercial losses in Transmission Distribution systems: 1) Make unauthorized extension of loads. ( Direct Hooking) 2) Errors in meter reading & recording (faulty meter). 3) By ... turn reduces the energy requirements by some scale in turn leading to saving in energy sources.

State and explain any four commercial losses in transmission and distribution system.

Description : State and explain any four commercial losses in transmission and distribution system.

Last Answer : Skin effects Carvana effect  Core loss  Over current 

State and explain any four technical losses in transmission and distribution systems.

Last Answer : Technical losses: i) Copper losses ii) Unbalance loading iii) Long length of distribution lines iv) Conductor of inadequate size v) Various losses in transformer vi) Long distance between transformer and ... be the season behind this which is due to less interest of the line men in their work.

What are the losses in induction motor?

Description : What are the losses in induction motor?

Last Answer : a. Stator losses (stator copper losses, stator iron losses). b. Rotor losses (rotor copper losses, rotor iron losses). c. Windage and friction losses.

The rotor slots of a repulsion-type motor are generally skewed (placed nonparallel to the rotor axis) to _________. A. produce a constant starting torque B. permit a greater air gap with the starter C. permit a smaller air gap with the starter D. reduce eddy current losses

Description : The rotor slots of a repulsion-type motor are generally skewed (placed nonparallel to the rotor axis) to _________. A. produce a constant starting torque B. permit a greater air gap with the starter C. permit a smaller air gap with the starter D. reduce eddy current losses

Last Answer : Answer: A

The purpose of amortisseur windings in a synchronous motor is to ______________. A. reduce eddy current losses B. produce a higher power factor C. provide a means for starting D. eliminate arcing between the stator and the rotor

Description : The purpose of amortisseur windings in a synchronous motor is to ______________. A. reduce eddy current losses B. produce a higher power factor C. provide a means for starting D. eliminate arcing between the stator and the rotor

Last Answer : Answer: C

Amortisseur windings are installed in a synchronous motor to _____________. A. reduce eddy current losses B. produce a higher power factor C. provide a means for starting D. eliminate arcing between the stator and the rotor

Description : Amortisseur windings are installed in a synchronous motor to _____________. A. reduce eddy current losses B. produce a higher power factor C. provide a means for starting D. eliminate arcing between the stator and the rotor

Last Answer : Answer: C

State the significant features of Energy Efficient Motor.

Description : State the significant features of Energy Efficient Motor.

Last Answer : Significant features of Energy Efficient Motor: 1. Material used is of high quality. ( High flux density & High current density) 2. Due to high quality material luminous used are ... Less (negligible) maintenance. 7. Operating temperature with standing capacity is more without any problem.

Suggest energy conservation techniques to be used in automobile workshop.

Description : Suggest energy conservation techniques to be used in automobile workshop.

Last Answer : 1.Take advantage of the used-oil exemption rule by installing an oil-drip heater for your facility. you can burn your used oil and generate heat at your facility reducing the disposal costs associated ... watt LED exit lights. These lights last longer (up to 25 years) and reduce maintenance costs.

Autotransformer starters or compensators are sometimes used with polyphase induction motors to _____________. A. reduce the voltage applied to the motor during the starting period B. increase the voltage for 'across-the-line starting' C. provide a backup means of voltage regulation for emergency starting D. allow the voltage to be either stepped up or down, depending on the application, to ensure full torque

Description : Autotransformer starters or compensators are sometimes used with polyphase induction motors to _____________. A. reduce the voltage applied to the motor during the starting period B. increase the voltage for ' ... to be either stepped up or down, depending on the application, to ensure full torque

Last Answer : Answer: A

List the various losses on a DC Motor.

Description : List the various losses on a DC Motor. 

Last Answer : The various losses on a DC Motor: 1) Winding losses (Copper losses): i) Armature winding losses ii) Shunt field losses iii) Series field losses 2) Core losses (iron losses): 3) Brush contact losses: 4) Windage and frictional (Mechanical losses):