Which of the following is true regarding service hotlines?
A) A monthly fee is charged for a specific amount of access time
B) The hotline technician often is a specialist in the particular manufacturer in question
C) Both A and B
D) Neither A nor B
C
You might also like to view...
Curve 2 has an arc length of _______, a delta angle of _______, a radius of _______, a long chord of ______, and a chord bearing of _______.
Fill in the blank(s) with the appropriate word(s).
Concrete structures used for raising cool-water fish are called ____
A) raceways B) troughs C) tanks D) ponds
Why should technicians read industry periodicals and publications?
A) Most certifications require an hour of journal reading a week. B) To find coupons for local grocery stores C) To stay informed about the latest HVACR technology D) To practice reading because technicians don't read much
A cylindrical solenoid is shown in Figure P18.36. The plunger may move freely along its axis. The air gap between the shell and the plunger is uniform and equal to 1 mm, and the diameter d is 25 mm. If the exciting coil carries a current of 7.5 A, find the force acting on the plunger when x = 2 mm. Assume N = 200 turns, and neglect the reluctance of the steel shell. Assume lg is negligible.
