Exam Details
| Subject | Energy Auditing And Analysis | |
| Paper | ||
| Exam / Course | B.Tech. VIEP- Electrical Engineering III (BTCSVI/BTECVI/BTELVI) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2015 | |
| City, State | new delhi, |
Question Paper
1. Explain energy audit for air conditioners in detail.
2. How can tri-generation be done in any industry Explain with the help of a flow chart.
3. How will you reduce the consumption of energy in compressors and furnaces?
4. Explain the effect of power factor improvement in energy conservation.
5. What do you mean by energy auditing? Explain different instruments for auditing in detail.
6. "Solar power satellites, deep geothermal wells, and ocean thermal gradients are a few electric power sources proposed for the future." Discuss anyone of these proposed concepts.
7. The following are the details of the load on a circuit:
Six lights of 60 watts each working for 1 hour per day.
Four fluorescent tubes of 40 watts each working for 4 hours per day.
Two heaters of 1000 watts each working for 1 hour per day.
One electric iron of 750 watts working for 2 hours per day.
Six fans of 60 watts each working for 18 hours per day. If each unit of energy costs RS what will be the total bill in RS for a month of 30 days
8. A pressure reducing valve is proposed to be replaced by a steam turbine. The investment required is RS 50 lakhs. Additional maintenance and operating costs for the turbine are expected to be RS 2 lakh per annum. If the annual savings is RS 13 lakhs, calculate the Payback period and Return on Investment.
9. A textile dryer is found to consume 5 m^3/hr of natural gas with a calorific value of 800 kJ/mole. If the throughput of the dryer is 60 kg of wet cloth per hour, drying it from 55% moisture to 10% moisture, estimate the overall thermal efficiency of the dryer taking into account the latent heat of evaporation only.
Note:
Latent heat of evaporation 2257 kJ/kg. Assume the natural gas to be at standard temperature and pressure at which 1 mole occupies 22·4 litres.
10. A drilling machine drawing continuously 5 kW of input power and with an efficiency of is used in drilling a bore in an aluminium block of 5 kg of mass. How much will be the rise in temperature of the block at the end of 100 seconds Assume 20% of the energy imparted to the block is lost to surroundings and the balance is absorbed by the block in its uniform heating. The specific heat of aluminium block =900 K).
11. Calculate the fixed electrical energy consumption for a rolling mill consuming 3,00,000 kWh units of electricity to produce 500 MT of product per month and having specific electrical energy consumption of 500 kWh/MT.
12. Write short notes on any two of the fio11owing:
Load Matching
Load Profiling
Loading of Transformers
Technoeconomic Analysis
2. How can tri-generation be done in any industry Explain with the help of a flow chart.
3. How will you reduce the consumption of energy in compressors and furnaces?
4. Explain the effect of power factor improvement in energy conservation.
5. What do you mean by energy auditing? Explain different instruments for auditing in detail.
6. "Solar power satellites, deep geothermal wells, and ocean thermal gradients are a few electric power sources proposed for the future." Discuss anyone of these proposed concepts.
7. The following are the details of the load on a circuit:
Six lights of 60 watts each working for 1 hour per day.
Four fluorescent tubes of 40 watts each working for 4 hours per day.
Two heaters of 1000 watts each working for 1 hour per day.
One electric iron of 750 watts working for 2 hours per day.
Six fans of 60 watts each working for 18 hours per day. If each unit of energy costs RS what will be the total bill in RS for a month of 30 days
8. A pressure reducing valve is proposed to be replaced by a steam turbine. The investment required is RS 50 lakhs. Additional maintenance and operating costs for the turbine are expected to be RS 2 lakh per annum. If the annual savings is RS 13 lakhs, calculate the Payback period and Return on Investment.
9. A textile dryer is found to consume 5 m^3/hr of natural gas with a calorific value of 800 kJ/mole. If the throughput of the dryer is 60 kg of wet cloth per hour, drying it from 55% moisture to 10% moisture, estimate the overall thermal efficiency of the dryer taking into account the latent heat of evaporation only.
Note:
Latent heat of evaporation 2257 kJ/kg. Assume the natural gas to be at standard temperature and pressure at which 1 mole occupies 22·4 litres.
10. A drilling machine drawing continuously 5 kW of input power and with an efficiency of is used in drilling a bore in an aluminium block of 5 kg of mass. How much will be the rise in temperature of the block at the end of 100 seconds Assume 20% of the energy imparted to the block is lost to surroundings and the balance is absorbed by the block in its uniform heating. The specific heat of aluminium block =900 K).
11. Calculate the fixed electrical energy consumption for a rolling mill consuming 3,00,000 kWh units of electricity to produce 500 MT of product per month and having specific electrical energy consumption of 500 kWh/MT.
12. Write short notes on any two of the fio11owing:
Load Matching
Load Profiling
Loading of Transformers
Technoeconomic Analysis
Other Question Papers
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Subjects
- Active Filter Design
- Advanced Control System
- Advanced Power Electronics
- Applied Electromagnetics
- Basics Of Electrical Engineering
- Computer Process Control
- Control System
- Digital Electronics
- Electric Energy Utilization
- Electrical And Electronics Engineering Materials
- Electrical Instrumentation
- Electrical Machine - I
- Electrical Machines - Ii
- Electrical Machines And Electronics
- Electrical Measurements And Measuring Instruments
- Electro Mechanical Energy Conversion - I
- Electro-Mechanical Energy Conversion - Ii
- Electro-Mechanical Energy Conversion-Iii
- Electromagnetic Theory
- Energy Auditing And Analysis
- High Voltage Engineering
- Industrial Drives
- Micro Controllers
- Microprocessor And Applications
- Network Theory
- Power Quality Issues And Remedial Measures
- Power System
- Power System - I
- Stochastic Control Systems
- Switchgear And Protection