Motor-generator sets are equipment found in some electrical installations and can be used for various purposes. We can cite its application to supp...

Motor-generator sets are equipment found in some electrical installations and can be used for various purposes. We can cite its application to supply power outages from the utility company and also to reduce energy consumption from the utility company during peak hours. Regarding motor-generator sets, the following statements are made. I. The noise from the fans comes from the acceleration and deceleration of the fans due to generator load variations. II. The acoustic blanket must be applied to the walls and ceiling of the engine room so that the external noise level does not exceed 60 dB. III. Together with the acoustic blanket, noise attenuators are used on the walls and ceiling to help reduce external noise. IV. The specifications of the motor-generator set installation site are made by a civil engineer. What is correct?

I. True
II. True
III. True
IV. False
A) I and III only.
B) II and IV only.
C) I, II and III only.
D) II, III and IV only.
E) I, II, III and IV.