Types of control systems include:
A) Pneumatic, hydraulic, and electro-mechanical.
B) Line voltage, low voltage, and communicating.
C) Voltage, current, and milliamp.
D) Pneumatic, electromechanical, electronic, and DDC.
D
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OSHA's requirements for exit arrangements are found in:
A) 29 CFR 1910.37(e) B) 29 CFR 1910.38 C) 29 CFR 1926.65. Appendix C D ) 29 CFR 1910.37(a)
Technician A says that hydrogen is the fuel source for a fuel cell. Technician B says that hydrogen is an energy carrier for a fuel cell. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
When low voltage thermostat wire is run through the roof to the conditioned space the thermostat should then be located as close to the ________ as possible
A) electrical service panel B) fresh air intake C) return air D) mechanical room
Pressure is measured as a force per unit of __________.
A. volume B. time C. area D. mass