Name two examples of special equipment that use motor reversal and dynamic braking operations.
What will be an ideal response?
Reversal of motors and dynamic braking are operations used in special equipment such as cranes, hoists, railway cars, and elevators.
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As a result of Senator McCarthy's crusade against communist subversion in America
A. the FBI was shown to have had several spies working as communist agents. B. the United States Army was forced to give dishonorable discharges to more than 100 officers. C. the State Department lost a number of Asian specialists who might have counseled a wiser course in Vietnam. D. Eisenhower nearly lost the Republican presidential nomination in 1956. E. the United States achieved a stronger settlement in Korea.
Which specie use the highest percentage of artificial insemination?
A) Turkey B) Dairy Cattle C) Swine D) Beef Cattle
This type of weld is formed in the internal corner of the angle formed by two pieces of metal.
a. fillet weld b. square groove weld c. V groove weld d. bevel groove weld
A certain band-limited periodic current has only three frequencies in its Fourier series representation: dc, 50 Hz, and 100 Hz. The current may be represented as i(t) = 4 + 6 sin 100 ? t + 8 cos 100 ? t - 3 sin 200 ? t - 4 cos 200 ? t A
(a) Express i(t) in amplitude-phase form. (b) If i(t) flows through a 2-? resistor, how many watts of average power will be dissipated?