How much power is dissipated when 200 milliamps of current pass through a 33.0 ? resistor?
What will be an ideal response?
1.3 watts
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A very common device that uses the principle of expanding metal to operate a set of contacts is the ____________________ relay found in the refrigeration industry.
Fill in the blank(s) with the appropriate word(s).
You bought the field shown in Figure 5-1 for $4,860 per acre. (Note: 1 acre = 10 ch2.) (Note:Use a scale drawing.)
a. How many acres are in the field?
b. What did the land cost?
Use circuit diagrams and motor characteristics to explain your answer.
Show how the starting current of the following machines can be reduced. Discuss the effect of your methods on the starting torque. a. dc shunt motor (not a separately excited motor) b. dc series motor c. Induction motor
What type of battery uses two different electrolytes?
A) NiCD B) Lead-acid C) Potassium phosphate D) Sodium-metal chloride