In the remote keyless entry (RKE) system, the transponder and receiver system operate ____.

A. only at a very close range
B. at a fixed radio frequency
C. in series
D. without bus communication messages


Answer: B

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A walk-in freezer is located in the basement and the 1-1/2 HP condensing unit is located at the back of the building on the roof 3 stories above the basement. The tech has 20’ of horizontal piping in the basement and 30 feet of vertical piping to the roof. What size is the horizontal pipe in the basement?

a. 5/8” b. 7/8” c. 1-1/8”

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Your shop charges $50.00 per flat rate hour, The shop takes in a 4-hour job that takes the technician 3 hours to complete. The technician is paid $12.50 per flat rate hour. What is the gross profit of this transaction?

A) $162.50 B) $37.50 C) $112.50 D) $150.00

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What is NOT considered personal safety equipment?

A) Hearing protection B) Rubber gloves C) Air impact wrench D) Safety glasses

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The capacitors in a the feedback network of a Colpitts oscillator are C1 = 0.22 ?F and C2 = 0.022 ?F. If the inductor is equal to 1.1 mH the output frequency of the oscillator is

A) 9.75 kHz B) 33.9 kHz C) 7.45 kHz D) 3.41 kHz

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