Free HCIA Data Center Facility V1.0 Exam H12-411 Exam Practice Test

For the unsaturated air, the relationship of size among the dry bulb temperature, wet bulb temperature and dew point temperature is ().

• Dry bulb temperature> Dew point temperature> Wet bulb temperature
• Dry bulb temperature> wet bulb temperature> dew point temperature
• Wet bulb temperature> dew point temperature> dry bulb temperature
• wet bulb temperature> dry bulb temperature> dew point temperature

High sensible heat ratio is the only difference between a precision air conditioner and a residential air conditioner.

• True
• False

UPS can clean electricity input, output stable exchange, to protect the load

• True
• False

Which of the following belongs to air-cooled line air conditioning?

• NetCol5000-C
• NetCol5000-A
• NetCol8000-C
• NetCol8000-A

The humidifier that Huawei row-level precision air conditioner uses is the infrared humidifier.

• True
• False

Which of the following does not belong to the four major components of air conditioning?

• Compressor
• Evaporator
• Fan
• Condenser

When AC power equipment are introduced in by using three-phase four-wire system, in addition to the zero line on the near side of the power transformer grounding, electrical equipment and the engine roomshould be near the ground repeatedly.

• TRUE
• FALSE

At present, batteries are installed in data centers mainly in rack-mounted and tank-mounted installations.

• TRUE
• FALSE

Which of the following component can improve the heat exchanger heat exchange capability?

• Fan
• Two-way valve
• Condensate pump
• Electric heating

Huawei chilled water air conditioner rely on which to adjust the water flow?

• Flow switch
• electric two-way valve
• Butterfly valve
• Globe valve