Many oils are identified by two numbers (i.e. 10W-30). These types of oil are referred to as ________ oils
A) Multi-grade
B) Binumeral
C) Semi-grade
D) 2-number
A) Multi-grade
Trades & Technology
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Universal motors ____.
a. are used in a number of portable appliances b. have very good speed regulation c. are always operated under 1,000 RPM d. do not produce a high horsepower
Trades & Technology
What is the motor full-load current for a motor with a nameplate rating of 50hp, 460V, 3Ø?
a. 52A b. 65A c. 81A d. 130A
Trades & Technology
Which of the following components consists of a hardened, splined stub, welded to the end of a driveshaft tube, and mates to a yoke with matching internal splines?
A. universal joint B. slip yoke C. hanger bearing D. cardan joint
Trades & Technology
UL Class R fuses have a short circuit interrupting rating of up to _____.
a. 50,000A b. 75,000A c. 125,000A d. 200,000A
Trades & Technology