How much mechanical leverage can result when a piston throw on the crankshaft forms a 90 degree angle to the piston on its downstroke?

A. none
B. minimum
C. 50% of maximum
D. maximum


Answer: D

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Inverters are used not only to vary the speed of the squirrel-cage motor, but also to vary its ____, start the motor slowly and smoothly, and increase the motor's efficiency.

A. current B. torque C. horsepower rating D. voltage rating

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Divide (41°48') ÷ 4.

Fill in the blank(s) with the appropriate word(s).

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One type of tool that is least likely to slip when holding small parts, is the:

A) Lever jawed wrench B) Parallel jaw cutting pliers C) Slip joint pliers D) Water pump pliers

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If a resistor that is color-coded yellow-violet-brown-gold is connected to a 12 V source, then what is the current flow?

A) 24.3 mA B) 255 mA C) 25.5 mA D) 26.9 mA

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