Lucindajohns

DHCP - Dynamic Host Configuration Protocol is used to assign IP addresses automatically to clients on the network. The connectionless DHCP uses UDP port 67 for sending data to the server and UDP port 68 for sending data to the client. DHCP replaced an earlier protocol called BOOTP that functioned similarly. Port: 67 and 68 Transport Protocol: UDP DNS - Domain Name System maps computer names to IP addresses. TCP 53 is used for DNS zone transfers, whereas UDP 53 is used for DNS queries and ...

A 24-V transformer with a 40-VA rating can operate safely with a current of _____. a. 6.0 mA. b. 960.0 mA. c. 0.6 A. d. 1.67 A. - 1.67 A A cooling anticipator in the control circuit is connected in ____ with the ____ switch of the thermostat. a. Parallel, cooling b. Parallel, heating c. Series, cooling d. Series, heating - Parallel, cooling A cooling load calculation estimates the sensible heat gain of a structure. The maximum sensible capacity of a cooling-only system should be with...

A customer is concerned that during the heating season heavy ice builds up on one side of the concrete equipment pad and coil. The rest of the coil is clear of ice and the heat pump is meeting the heating needs of the house. What is most likely the cause of the problem? A: High winds on that side of the outdoor unit B: The outdoor unit is not level C: There is more refrigerant on that side of the coil D: A defrost problem exists - B: The outdoor unit is not level A heat pump defrosts even...

A 24-V transformer with a 40-VA rating can operate safely with a current of ____. a. 6.0 mA b. 960.0 mA c. 0.6 A d. 1.67 A - d (1.67 A) A cooling anticipator in the control circuit is connected in ____ with the ____ switch of the thermostat. a. parallel, cooling b. parallel, heating c. series, cooling d. series, heating - a (parallel, cooling) A cooling load calculation estimates the sensible heat gain of a structure. The maximum sensible capacity of a cooling-only system should be w...

A high pressure control is usually located on the: A: Condensing unit B: Evaporator C: Cabinet D: Blower - A: Condensing unit A high pressure safety control is: A: Direct acting B: Reverse acting C: Dual acting D: None of the above - B: Reverse acting A low pressure control is usually located on the: A: Condensing unit B: Evaporator C: CabinetD: Blower - A: Condensing unit

A high pressure control is usually located on the: - A: Condensing unit A high pressure safety control is: - B: Reverse acting A low pressure control is usually located on the: - A: Condensing unit A low voltage control system that primarily operates on two levels of voltage is called: - B: A digital system A motor is a ________ load. - B: Inductive A set of contacts in a pressure control that close when the pressure increases are - A: Direct acting Direct acting means "closes on rise"...

*Using an attached diagram what purpose does PI/S I serve? - It is a multi pin connector 10 is what percent of 30? - 333.33% * Solution: 10/30 x 100 = 33.33 14.7 psia is equal to? - 0 psig 7 is what percent of 9? - 77.77% *Solution: 7/9×100 = 77.77 A big refrigerant leak in a small boiler room will cause: - The oxygen to be displaced A brazing flux is required whenever you are brazing: - Copper to brass

A 24-V transformer with a 40-VA rating can operate safely with a current of _____. - 1.67 A A bright red or orange glow from the resistance elements in a duct heater indicates that the: - flow of air is insufficient A capacitor start-capacitor run (CSCR) motor has an open run capacitor. Will it start? - It may start, but it draws a higher than normal running current

A 3ton residential split system should move about how many CFM total? A: 800 CFM B: 1000 CFM C: 1200 CFM D: 1500 CFM - C: 1200 CFM Rule of thumb, tonnage x 400 = cfm; 3 x 400 = 1,200cfm A compressor is short cycling. Which of the following would not be the cause? A: Low pressure controller differential set too close B: Automatic reset high pressure control differential set too close C: Low refrigerant charge D: Leaking compressor suction valve - D: Leaking compressor suction valve A d...

A client has thoughts that they cannot exercise on their own, that they look silly doing it, and that other people are watching them. They believe these thoughts to be true. What is occurring? - Cognitive fusion According to the "iceberg effect," which of the following training adaptations are considered "surface level"? - Endurance Approximately what percentage of the human body (in male and female adults) is comprised of water? - 0.6 Excessive anterior pelvic tilt would lead to this...