EMT Practice Test

1. Question Content...

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Question1: The principle of the condenser is to cool and release the high-pressure gaseous refrigerant to the liquid state to realize the heat transfer and release.

Question2: MCB circuit breaker can be divided into B, C, D, Z, K class according to different tripping characteristics. For IT loads, the () level tripping characteristics should be used.

Question3: ATS Dual Power Automatic Transfer Switch can achieve the switching of two-way power's fast loading machine.

Question4: The end of lead-acid battery discharge, the vottage drop, positive and negative active materials transform into ().

Question5: Dynamic environment monitoring system, can be used to store high-definition images, provide large-scale storage media, for long-time storage of video recording equipment is ().

Question6: ACB circuit breakers are mainly used for IT load front-end; such as UPS output cabinet.

Question7: Data center energy consumption mainly comes from the ring equipment, lighting system, refrigeration systems, power supply and distribution system. How to reduce the energy dissipations of the () is the key to solve data center energy conservation in the industry at present

Question8: Huawei NetEco monitoring system supports hierarchical network management functions.

Question9: Access control system can only set whether the user can open the door, can not be set when to open the door.

Question10: Computer room fire protection system mainly consists of () system. (Multiple choice)

Question11: During the construction process, which should be used in corrosive operation? (Multiple choice)

Question12: The features of UPS are (). (Multiple Choice)

Question13: In a data center use fire water and foam extinguishing system will not cause damage to communications equipment.

Question14: Users can use the () function to assign personnel to troubleshoot

Question15: In the process of construction, carry out the debris splash operation, should use ().

Question16: Huawei NetEco monitoring system does not support remote door open.

Question17: What throttle devices does Huawei air-cooled precision air conditioning use? (Multiple choice)

Question18: Alarms of the dynamic environment monitoring system usually have different levels.

Question19: Air conditioning has three major indicators; the three major indicators refer to (). (Multiple Choice)

Question20: Under the same load conditions, the backup time of the UPS is mainly determined by the battery capacity and the number of battery sections. The larger the battery capacity is, the longer the backup time is.

Question21: Which of the following is not a basic function of a low-voltage circuit breaker?

Question22: Gas fire protection systems are fire extinguishing systems that inject gas (including steam, aerosol) as a fire extinguishing medium.

Question23: Leakage current protection device is based on the current exceeds the specified value for a period of time with its own heat to melt the melt so that the circuit is disconnected.

Question24: Which of the following description about sending back to send air is correct?

Question25: When mains input range of voltage: 150-260VAC, frequency: 45-60HZ, which of the following UPS working range can work in the main inverter state?

Question26: UPS can clean electricity input, output stable exchange, to protect the load

Question27: Which of the following outdoor modles belongs to double fan?

Question28: Huawei dynamic environment monitoring system's components have (). (Multiple choice)

Question29: According to the concentration degree of equipment, air conditioning system can be divided into (). (Multiple choice)

Question30: The function of the fire protection system is automatically capture the smoke or heat when a fire occurs in the fire detection area, thereby giving an audible and visual alarm and controlling automatic fire extinguishing.

Question31: Use RS485 communication, the maximum communication distance are () meters.

Question32: Which of the following does not belong to the four major components of air conditioning?

Question33: The following () circuit breakers are typically low voltage circuit breakers for IT loads.

Question34: Dynamic environment monitoring system can be applied to () scene. (Multiple choice)

Question35: The STS Static Transfer Switch enables switching between different input power supply and provides dual power supply for single power load.

Question36: Which of the following is not part of the chilled water air conditioner?

Question37: Which fire extinguishing agent is mainly used in data center fire protection system?

Question38: RER (Renewable Energy Ratio) is used to measure data center using Renewable Energy, so as to promote the solar Energy, wind Energy, hydropower and other Renewable, no carbon emissions or little Energy utilization of carbon emissions.

Question39: () is used to ensure that the extinguishing agent is sprayed in a specific jet to promote the rapid vaporization of the extinguishing agent and to achieve the extinguishing concentration within the protected space.

Question40: Which of the following start then the alarm emits a strong sound and light alarm signal to remind the scene of the purpose of attention?

Question41: The main monitoring objects of data center room monitoring system are power systems, environmental systems, fire protection systems etc.

Question42: The principle of evaporator is to convert refrigerant from liquid to gas, take away the heat of the object to be refrigerated, to achieve refrigeration.

Question43: What types does Dual power switch ATS switch according to the different type of switches can be divided into? (Multiple choice)

Question44: A UPS capacity is 200KVA with output power factor is 0.9, then how much load does It can drive up?

Question45: Generally there are two kinds for VAV ventilation, one is through the adjustable air valve, the other is a dedicated ventilation floor plus adjustable fan composition.

Question46: Common communication equipment ways have RS232, RS485, FE, etc.

Question47: In the battery installation process, the use of high-voltage battery maintenance channel should be insulated.

Question48: There are three different categories of earthing (TN, TT and IT) in low voltage distribution systems. The second capital letter represents ().

Question49: Dynamic environment monitoring system only has secondary architecture.

Question50: There are three different categories of earthing (TN, TT and IT) in low voltage distribution systems. What does the first letters represent?