The automatic exposure control (AEC) with the thyristor set for a 400-speed screen-film system was used with an 800-speed film-screen system
a. The exposure will automatically adjust as the system speed changes to maintain density.
b. The exposure and kVp will automatically adjust as the system speed changes to maintain density and contrast.
c. The AEC does not automatically change. The image will be overexposed. The density will be adequate, but the contrast will be low.
ANS: C
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One advantage of nondedicated smoke control systems is:
A. the elaborate nature of the system controls. B. less chance of component failure due to regular use and maintenance. C. the operation and control are simpler than dedicated smoke control systems. D. nondedicated systems are less likely to be affected by modification or failure of other building systems.
Which of the following statements regarding ramps is MOST accurate?
A. They must be at least 52 inches (1 320 mm) wide. B. They must be enclosed by fire-resistance-rated construction. C. They must not extend longer than 20 feet (6 m) without a landing. D. They must have a maximum slope of 1 to 10 (1 foot [0.30 m] of rise for every 10 feet [3 m] of horizontal distance).