What type of actuators are used in electrohydraulic injectors (EHIs)?

A. solenoid only
B. piezoelectric only
C. both solenoid and piezoelectric
D. neither solenoid or piezoelectric


Answer: C

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A tap in the center of a transformer winding that will provide one half of the rated voltage of the winding is called a ____ tap.

a. secondary b. balance c. center d. primary

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The ____ show how much pressure is in the air tanks.

a. oil gauge b. air usage c. supply pressure gauge

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A very important similarity between gravitational and electric forces is that they are both governed by an inverse ____ law.

A. linear B. exponential C. square D. cube

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The secondary ignition circuit can be tested using ________

A) An ohmmeter B) Visual inspection C) An ammeter D) Both A and B

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