Name four types of ionizing radiation
What will be an ideal response?
Ionizing radiation is radiation that becomes electrically charged or changed into ions. Types of ionizing radiation include alpha particles, beta particles, neutrons, X-radiation, gamma radiation, high-speed electrons, and high-speed protons.
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All of the following statements are true EXCEPT:
A. a typical wiper motor has either two or three speeds. B. a typical permanent magnet motor has three brushes, one of which is a common ground. C. intermittent wipers allow the driver to vary the time interval a wiper sweeps across the windshield during foggy or misty conditions. D. electromagnet wiper motors have four brushes on the armature.
A boil is an example of:
What will be an ideal response?
Which of these electronic display devices uses a fluid and polarized glass to create numbers and characters?
A) CRT (Cathode Ray Tube) B) VFD (Vacuum Tube Fluorescent) C) LED (Light Emitting Diode) D) LCD (Liquid Crystal Display)
What type of vent is used with 80% Category I furnaces?
A) Type B double wall gas vent B) PVC C) Single wall stainless steel D) 90% efficiency furnaces do not require a vent