What are the two methods of electrical interlocking?
What will be an ideal response?
Two methods of electrical interlocking are available. One method is accomplished with the use of double-acting push buttons. The second method of electrical interlocking is accomplished by connecting the normally closed auxiliary contacts on one contactor in series with the coil of the other contactor.
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According to the 29 CFR 1926, toeboards shall be _____ .
A. a minimum of 4" in height B. no more than 3" in height C. exactly 5" in height D. a maximum of 4" in height
The most common reason for a ceiling is to
A) conceal the building structure and overhead utilities. B) reflect light. C) control heat and humidity. D) provide a sculpted or multilevel surface overhead. E) isolate sound.
All of the following diseases affect the nervous system except:
a. diabetes c. sclerosis b. aneurysm d. stroke
Suppose you have defined x = [1,2,3] and y = [2,4,6] in the Command Window. Determine the result of the following MATLAB operation: >>x .* y
a. ans = 3 6 9 b. ans = 2 8 18 b. ans = 1 2 3 2 4 6 c. ans = 6 12