____________________ occurs when the cool side of the metal becomes molten and a hole opens in
the surface.
Fill in the blank(s) with the appropriate word(s).
Burn-through
Burn through
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Identify the type of traverse shown in the specified figure.
1. See Figure R7–1. 2. See Figure R7–2. 3. See Figure R7–3. 4. See Figure R7–4. 5. See Figure R7–5.
Answer the following statement(s) true (T) or false (F)
1. Alternating-current energy can be transmitted economically over great distances. 2. Alternators (AC generators) have commutators. 3. The values indicated by AC ammeters and voltmeters are instantaneous values. 4. When current is supplied to an induction motor or any circuit with inductance, it lags the voltage.
Let X and Ybe Bernoulli random variables. Let Z = XY.
a. Show that Z is a Bernoulli random variable.
b. Show that if X and Y are independent, then 
.
A short circuit has ____ resistance.
A. very small B. infinite C. negative D. zero ohms