A dc, separately excited motor has an armature resistance of 1 ? and an inductive reactance of 2 ?. The motor is powered by an ac/dc converter. The average torque of the motor is 12 Nm. The field constant K? is 3 Vs, and the average terminal voltage is 100 V. Calculate the motor speed.
What will be an ideal response?
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Facilities that provide long-term storage of seeds or other plant parts for genetic preservation are called ________.
Fill in the blank(s) with the appropriate word(s).
The range is best defined as:
a. the difference between the highest and lowest number. b. most frequent measure in a distribution, or the value that occurs with the greatest frequency in the data. c. the desired value ; also called the nominal value. d. An unbiased smaller sample of a larger population used to represent the entire population.
Which of these is NOT true about used oil?
A) It can be mixed with used antifreeze. B) It can be used for other purposes. C) It can be recycled more than once. D) It must be stored in an approved container.
The system of pipes in a plumbing system that supply or remove air to relieve pressures below or above atmospheric pressure are called
A. vents B. pressure reducers C. pressure regulators D. relief valves