The synchronous speed at which a four-pole, 60Hz induction motor operates is _____
a. 1,140 rpm
b. 1,800 rpm
c. 2,500 rpm
d. 6,900 rpm
b
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To determine if a product or substance being used is hazardous, consult ________
A) EPA guidelines B) An MSDS C) A dictionary D) SAE standards
Technician A says that during a power balance test, the cylinder that causes the biggest RPM drop is the weak cylinder. Technician B says that if one spark plug wire is grounded out and the engine speed does not drop, a weak or dead cylinder is indicated. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
Between 1175 and 1225, universities appeared in
a. Salerno, Corinth, Byzantium, and Paris. b. Bologna, Rome, Seville, and Toledo. c. Salerno, Paris, Oxford, and Cambridge. d. Salerno, Bologna, Paris, and Oxford.
For natural ventilation, which windows should be opened last?
a. those windows openings directly into the fire room b. those windows in the rooms not directly involved in the fire c. leeward windows d. upwind windows