EUM MCQ's




Question 1 :
Simple payback period for a motor costing Rs.60 lakhs and with annual operational charges Rs.5 lakhs is expected to save Rs. 20 lakhs by reducing energy, is

  1. 5 years
  2. 4 years
  3. 3 years
  4. 2 years
  

Question 2 :
Which one of the following statements is NOT true for the capacitors used for power factor improvement

  1. Capacitor bank is used up to 100 kVAr.
  2. Capacitor should be connected near the load
  3. Enclosure of capacitor bank should be earthed.
  4. Capacitor once switched off, some minimum period should be allowed before switching on again
  

Question 3 :
Operating furnace at too high temperatures than optimum will NOT cause

  1. Carbonization
  2. De-carbonization
  3. Excessive oxidation
  4. Heat loss
  

Question 4 :
Select the wrong statement in case of steam trap

  1. Discharges condensate as soon as it is formed
  2. Capable of discharging air and other condensable gases
  3. Does not allow condensate to escape
  4. Does not allow steam to escape
  

Question 5 :
Which of the following may not help in energy efficient furnace operation?

  1. Maintaining a positive draft inside the furnace
  2. Minimizing refractory losses
  3. Complete combustion with maximum excess air
  4. Use of ceramic fiber in batch type furnace
  

Question 6 :
Lux meter is used for

  1. Measurement of Illumination Level
  2. Measurement of Flow
  3. Measurement of Level
  4. Measurement of Temperature
  

Question 7 :
To determine the pump efficiency, which three key parameters are required?

  1. Flow, volume and length
  2. Flow, Head and Power.
  3. Velocity, Force and Power.
  4. Temperature, Head and type of liquid.
  

Question 8 :
If speed of pump is doubled, power goes up by

  1. 2 times
  2. 6 times
  3. 4 times
  4. 8 times
  

Question 9 :
kVAr required to improve p.f. is calculated as

  1. kW(tan ᴓ1-tan ᴓ2)
  2. kW(cos ᴓ1-cos ᴓ2)
  3. kW(sin ᴓ1-tan ᴓ2)
  4. kW(sin ᴓ1-sin ᴓ2)
  

Question 10 :
Electrical energy meter for LT residential consumers records the amount of

  1. Consumed Electrical power
  2. Consumed electrical Energy
  3. System voltage
  4. Used resistance
  

Question 11 :
Tariff structure for residential consumers does not include

  1. Fixed Charges
  2. Wheeling Charges
  3. Energy Charge
  4. PF Penalty charge
  

Question 12 :
Non-contact type measurement of temperature is obtained by

  1. Infrared Thermometer
  2. Resistance Thermometer
  3. Manometer
  4. Lux meter
  

Question 13 :
How much will be the wastage of fuel oil per year if a hole of 3mm on a pipeline carrying 7kg/sq.cm steam

  1. 30KL
  2. 27KL
  3. 37KL
  4. 33KL
  

Question 14 :
Variable Speed drives operates on principle of

  1. Change in p.f.
  2. Change in Current
  3. Change in no. of poles
  4. Change in frequency
  

Question 15 :
Energy intensity is the ratio of

  1. Final consumption / GDP
  2. GDP / fuel consumption
  3. GDP / energy consumption
  4. energy consumption In Mkcal/ GDP
  

Question 16 :
The instrument used to measure various gases such as O2, CO, NO2 and SOX.

  1. Power analyzer
  2. Combustion Gas analyzer
  3. Fyrite
  4. Pyrometer
  

Question 17 :
In ECBC-compliant new building must have to show minimum energy savings of

  1. 0.3
  2. 0.25
  3. 0.2
  4. 0.15
  

Question 18 :
The difference in temperature between steam and condensate refers to the principle of operation of a

  1. Thermodynamic trap
  2. Thermostatic trap
  3. Orifice type trap
  4. Float trap
  

Question 19 :
A 20 kW rated motor is drawing actual measured power of 14 kW. If the rated efficiency is 92%, Determine the % loading of the motor?

  1. 52.1
  2. 75
  3. 82.3
  4. 64.4
  

Question 20 :
Which of the following statements is false regarding wind turbine?

  1. wind power does not vary as the cross-sectional area of the rotor
  2. wind power varies as cube of wind velocity
  3. cut-in wind speed is always less than rated wind speed
  4. theoretical maximum amount of energy in the wind that can be collected by wind turbine rotor is about 95%
  

Question 21 :
Availability based tariff is applicable to

  1. Oil
  2. Coal
  3. Natural gas
  4. Electricity
  

Question 22 :
The power factor indicated in HT electricity bill is

  1. Peak day pf
  2. Pf during night
  3. Average pf
  4. Instantaneous pf
  

Question 23 :
Which one is NOT the component of steam distribution system

  1. Valves
  2. Insulation
  3. Air vents
  4. Vapouriser
  

Question 24 :
The percentage of energy saved at the current rate of use, compared to the reference year rate of use, is called

  1. Energy Utilization
  2. Energy Efficiency
  3. Energy saving
  4. Energy Performance
  

Question 25 :
The legal framework of energy efficiency in India is given by

  1. Electricity Act 2003
  2. Energy Conservation Act 2001
  3. Indian Electricity Act 1910
  4. Electricity Supply Act 1958
  
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