Page 101 - Teach Yourself Electricity and Electronics

Quiz 81

B. 4 3 resistors.
C. 4 4 resistors.
D. 2 5 resistors.
18. You have an unlimited supply of 1-W, 1000- resistors, and you need a 500-
resistance rated at 7 W or more. This can be done by assembling:
A. Four sets of two 1000- resistors in series, and connecting these four sets
in parallel.
B. Four sets of two 1000- resistors in parallel, and connecting these four sets
in series.
C. A 3 3 series-parallel matrix of 1000- resistors.
D. Something other than any of the above.
19. You have an unlimited supply of 1-W, 1000- resistors, and you need to get a
3000-Ω, 5-W resistance. The best way is to:
A. Make a 2 2 series-parallel matrix.
B. Connect three of the resistors in parallel.
C. Make a 3 3 series-parallel matrix.
D. Do something other than any of the above.
20. Good engineering practice usually requires that a series-parallel resistive
network be made:
A. From resistors that are all very rugged.
B. From resistors that are all the same.
C. From a series combination of resistors in parallel.
D. From a parallel combination of resistors in series.

A good score is at least 18 correct answers. The answers are in the back of the book.