What should the service technician do if a blown fuse is found in the unit disconnect switch during the preliminary inspection?
A) Check all major loads for shorts and grounds.
B) Replace the fuse with one a size larger to prevent nuisance problems.
C) Replace the fuse with one of the same size and turn the disconnect switch back on.
D) Replace the fuse with a copper pipe, turn the disconnect on, and check the wire to see if it is getting warm.
A
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Cloud-to-Earth lightning strokes are most likely to occur ____.
A. in urban areas B. at a high point C. in valleys D. in rural areas
Using the bidirectional control function of the scan tool fails to make an actuator operate; which of the following could be the cause:
A. Faulty scan tool. B. Open actuator ground circuit. C. Open power circuit to the actuator. D. All of the above.
Generally speaking, electric heat is very efficient but costs more when compared to oil and gas.
Answer the following statement true (T) or false (F)
Find the numerical values of these functions.
(a) If g[n] = 10 cos (2?n/12) ? ? [n + 8] find g [4] (b) If g[n] = (u [n + 2] ? u [n ? 3] ) ? (? [n ? 1] ? 2? [n ? 2] ) find g[2] (c) If g[n] = ramp[n] ? u[n] find g [3] . (d) If g[n] = (u[n] ? u [n ? 5] ) ? ?2[n] find g[13] . (e) If y[n] = x[n] ? h [n] and x[n] = ramp[n] (f) If find g [n] = 10 cos (2?n/12) * ?[n+8] find g [4] (g) If g[n] = (u [2n + 2] ? u [2n ? 3] ) ? (? [n ? 1] ? 2? [n ? 2] ) find g [2] (h) If y[n] = x[n] ? h[n] and x[n] = ramp[n]