Basics Energy Efficiency
Choose the correct answer :
QUESTION 12
Which knowledge in the hands of an industrial consumer is mostlikely to lead to discovery of the most valuable energy costsavings?
a-The total energy bill
b-The energy bill split between sub-divisions of the plant
c-The energy bill split between end-uses on the plant
d-Time-based energy consumption profiles per end-use
QUESTION 13
Suppose that we have a motor three phase voltages as 404, 395and 380 volts. Calculate the voltage imbalance??
a- 3.2 %
b - 3.3%
c- 3.4%
d- 3.5%
QUESTION 14
A recent advertisement said an IE3 (premium efficiency) 50 kWmotor is available at 95%. It would replace an IE1 motor thatpresently runs at 91% efficiency. Given that (Motor runs 2,920hours/year, Demand cost is $ 10.00 kW per month, Energy cost is$0.6/kWh and Motor runs at 85% partial load all the time),calculate the annual savings ?
a-$ 580.44
b-$ 670.31
c-$ 1,741.15
d-$ 120.44
QUESTION 15
A three-phase 90 kW motor which has an efficiency of 92.5%. Ifits operated with an electrical power input 68.1 kW, at what loadfactor the motor is operated?
a-80%
b-75%
c-70%
d-65%
