The larger contactor sizes are used to provide remote control of relatively high-current circuits where it is too expensive to run the power leads to the remote controlling location.
1. The larger contactor sizes are used to provide remote control of relatively high-current circuits where it is too
expensive to run the power leads to the remote controlling location.
2. According to Fleming’s lefthand rule, motor action will tend to force the conductor in a downward direction.
3. The function of the blowout magnet is to move the arc downward at the same time that the contacts are opening
4. A mechanically held or latching relay is operated by electromagnets.
5. Mechanically held relays are often used in machine tool control circuits.
1. TRUE
2. FALSE
3. FALSE
4. TRUE
5. TRUE
You might also like to view...
Match each term with the correct statement below.
A. A search that is constrained to a specific focus B. Forensic techniques with a computer system as the source of evidence C. Forensic techniques with a digital electronic device as the source of evidence D. Regulates interception of electronic and oral communications E. Protects journalists from having to turn over material before public dissemination F. Identifies sources of relevant information on a first response team G. Maintains control of the field evidence log on a first response team H. The only forensic team field note that can be done in pencil I. Identifies each item collected by forensic team by a filename number
_______ calculates position by using current vehicle speed, time, and gyro inputs to estimate current location.
A. Dead reckoning B. VHF Omnidirectional Range navigation C. Global Satellite Positioning D. Loran navigation
Technician A says that poor fuel economy is usually due to an excessively lean air-fuel mixture. Technician B says that a rich air-fuel mixture can be caused by a defective oxygen sensor. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Match the system characteristics in the second column with the correct system in the right column
A air source packaged heat pump B split system heat pump C mini-split heat pump D water source packaged heat pump 1. can connect multiple indoor sections to one outdoor section 2. entire unit sits inside the house 3. whole unit sits outside house 4. consists of an outdoor and an indoor section What will be an ideal response?