HVAC Star Exam Questions Answered Correctly – Expert Verified | Latest Version 2024/2025

A bearing used on the bottom of a motor where the shaft is positioned vertically is called a ____________ bearing. - thrust A bellows is used: - in both pressure and temperature controllers A common refrigerant leak detection device is the: - halide torch. A direct drive pump often uses a ____________ that connects the shaft of the pump motor to the shaft of the circulator pump. - flexible coupling A dual-element fuse has: - a thermal cutout and a normal fuse link A flame sensing relay strategy that takes advantage of the fact that hot gasses in a flame become ionized and conduct electricity is called a - flame rod A flexible coupling between the drive and driven device: - corrects minor misalignment. A fuse is intended to carry its rated amperages: - indefinitely a gear pump is a type of - rotary pump A hand placed near a hot stove or fireplace is quickly heated by: - radiation A hermetic motor should never be energized or tested with a megger when in a deep vacuum because - the dielectric strength of the motor's insulation would be greatly reduced.