This type of seal is used when low cost, lubricant absorption, filtration, low friction, and a polishing action is needed.

a. packing
b. labyrinth seal
c. O-ring seal
d. felt or wool seal


d. felt or wool seal

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There are essentially two different types of motor starters: the standard motor starter and the ____ motor starter.

A. AC/DC B. multispeed C. reversing D. heavy-duty

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Technician A says that torsion bars can be re-installed on either side of the vehicle. Technician B says that torsion bars are often used on 4x4 trucks. Who is correct?

A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B

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What element stores energy in a magnetic field?

A. Inductor (coil) B. Switch C. Resistor D. Hysteresis loop

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Which of the equations below expresses the voltage gain relationship for an operational amplifier?

A) Vout/Vin = -Rf/Rin B) Vin/Vout = Rout/Rin C) Vout = Vin/Av D) Vout/Vin = Rout/Rin

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