What is a steep roof underlayment? With the help of a sketch, explain the underlayment requirements for an asphalt shingle roof.
What will be an ideal response?
See the Instructor's Manual (IM).
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The voltage across a load and the current through it are given by
v(t) = 20 + 60 cos 100t V i(t) = 1 – 0.5 sin 100t A Find: (a) the rms values of the voltage and of the current (b) the average power dissipated in the load.
When an E-7018 electrode is used to weld a kingpin to an upper coupler plate, which of the following is true of the resulting weld deposit?
A. it will fracture dead center B. it will fracture at the sides of the weld profile C. its hardness is between the kingpin base material and the upper coupler base material D. it becomes contaminated with carbon slag from the kingpin base material
Technician A says that superchargers have a delay in their response called boost lag. Technician B says that turbochargers have a delay in response called turbo lag. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
A solenoid consists of ________
A) a burglar alarm relay B) a coil of wire wound around a core C) a permanent magnet D) two plates separated by an insulator