Which of the following is important when lifting a heavy object?
A. Keep weight close to body.
B. Use your leg muscles.
C. Keep your back straight.
D. All of the above
Answer: D
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The sum of currents in each branch of a parallel circuit will ________ total circuit current
A) Be less than B) Be more than C) Equal D) None of these
________ is the term for the change from a vegetative growing point to into flowering parts.
A. Initiation B. De-vegetation C. Floralization D. Commencement
Which of the following are primarily designed for use with inductive motor loads and to withstand the interrupt current of a locked rotor?
a. Lighting contactors b. Definite-purpose contactors/motor starters c. NEMA-rated contactors/motor starters d. IEC-rated contactors/motor starters
Problem 1.C1
A solid steel rod consisting of n cylindrical elements welded together is subjected to the loading shown. The diameter of element i is denoted by di and the load applied to its lower end by Pi, with the magnitude Pi of this load being assumed positive if Pi is directed downward as shown and negative otherwise. (a) Write a computer program that can be used with either SI or U.S. customary units to determine the average stress in each element of the rod. (b) Use this program to solve Probs. 1.1 and 1.3.