What model of ventilation fan for my bathroom would be the most quiet?

What model of ventilation fan for my bathroom would be the most quiet?
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1 Answer

Answer :

There are many quiet ventilation fans on the market today. Some examples of these fans include the Air King 80 CFM Deluxe Ultra Quiet Series Exhaust Fan and the Panamex Airzone EZM70 Deluxe Ventilation Fan.
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Inter-distance between ventilation columns in a sewer line is kept A. 25 to 50 m B. 50 m to 100 m C. 100 m to 150 m D. 150 m to 300 m

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Which of the listed safety features should be provided in small rooms or lockers where batteries are stored? A. Installation of a fixed CO2 system. B. An exhaust duct is to be provided and led from within three inches of the deck. C. Power ventilation is to be provided if trickle charging is utilized. D. An exhaust duct is to be provided and led from the top of the locker to the open air.

Description : Which of the listed safety features should be provided in small rooms or lockers where batteries are stored? A. Installation of a fixed CO2 system. B. An exhaust duct is to be provided and led from within ... An exhaust duct is to be provided and led from the top of the locker to the open air.

Last Answer : Answer: D

If a DC motor runs hot, the cause may be _____________. A. high mica condition B. low ambient temperature C. clogged ventilation ducts D. an open in the shunt field

Description : If a DC motor runs hot, the cause may be _____________. A. high mica condition B. low ambient temperature C. clogged ventilation ducts D. an open in the shunt field

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An open armature connection in a DC propulsion motor could be caused by ____________. A. low-load operation B. clogged ventilation ducts C. sparking at the brushes D. a grounded shunt field coil

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Which of the following conditions can lead to the failure of a resistor? A. Excessive vibration B. Insufficient ventilation C. Corrosion D. All of the above

Description : Which of the following conditions can lead to the failure of a resistor? A. Excessive vibration B. Insufficient ventilation C. Corrosion D. All of the above

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In the illustration, the purpose of part B is to _________. EL-0033 A. increase resistance in series with the contacts as they close to prevent arcing B. create a magnetic field in the steel plates that interacts with the arc to cool and extinguish the arc C. cause the contacts to open in the event of an overload D. provide ventilation to the contact when the breaker is close to rated capacity

Description : In the illustration, the purpose of part B is to _________. EL-0033 A. increase resistance in series with the contacts as they close to prevent arcing B. create a magnetic field in the steel ... event of an overload D. provide ventilation to the contact when the breaker is close to rated capacity

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Which of the following problems is indicated if a lead-acid battery begins to gas violently when it is first placed on charge? A. Insufficient compartment ventilation is being provided. B. A short circuit exists in one of the battery cells. C. The battery is undergoing its normal charging rate. D. An excessive charging rate is being applied to the battery.

Description : Which of the following problems is indicated if a lead-acid battery begins to gas violently when it is first placed on charge? A. Insufficient compartment ventilation is being provided. B. A short ... undergoing its normal charging rate. D. An excessive charging rate is being applied to the battery.

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Last Answer : Answer: B

Violent gassing from a lead-acid battery while it is being charged, indicates that the _____________. A. plate separators are grounded B. battery compartment ventilation is inadequate C. electrolyte specific gravity is too low D. charging rate is too high

Description : Violent gassing from a lead-acid battery while it is being charged, indicates that the _____________. A. plate separators are grounded B. battery compartment ventilation is inadequate C. electrolyte specific gravity is too low D. charging rate is too high

Last Answer : Answer: D

During the charging process of storage batteries, the charging rooms should be well ventilated because __________. A. without ventilation excessive gassing will occur B. highly poisonous gases are released C. highly explosive gases will otherwise accumulate D. without ventilation the battery will not take a full charge

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Last Answer : Answer: C

Regarding battery charging rooms, ventilation should be provided __________. A. at the lowest point of the room B. horizontally near the batteries C. at the highest point of the room D. only when charging is in progress

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Last Answer : Answer: C

Which of the listed precautions should be observed before spraying liquid solvent on the insulation of an electric motor? A. Slow the motor down to low speed. B. Disconnect the motor from the power source. C. Secure all ventilation in the area. D. Preheat the insulation to assist in cleaning.

Description : Which of the listed precautions should be observed before spraying liquid solvent on the insulation of an electric motor? A. Slow the motor down to low speed. B. Disconnect the motor from the power source. C. Secure all ventilation in the area. D. Preheat the insulation to assist in cleaning.

Last Answer : Answer: B