ELECTRICITY FOR TRADES (LOOSELEAF)
3rd Edition
ISBN: 9781260437454
Author: Petruzella
Publisher: MCG
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Textbook Question
Chapter 7.1, Problem 2RQ
Write the metric prefix and symbol used to represent each of the following:
- a. One-thousandth
- b. One million
- c. One millionth
- d. One thousand
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Convert following numbers in given radix system:
a. (213)10 into Hexadecimal
b. (E1A)16 into Decimal
Tutorial
1. Given a list of numbers with mathematical operations, convert below numbers into
scientific notation and Metric prefix as shown in Table 1.
Table 1
No
Value
Scientific
Metric unit
notation
10A + 0.005kA – 805000mA
kA
(ii)
8.50 + 1.05KQ + 2058m2
(iii)
20.5kV - 0.0002MV - 2000V
V
MV
Worked Example 1-1
Express the following numbers in scientific notation:
a) 408.00
b) 0.007956
Chapter 7 Solutions
ELECTRICITY FOR TRADES (LOOSELEAF)
Ch. 7.1 - What is the base unit and symbol used for...Ch. 7.1 - Write the metric prefix and symbol used to...Ch. 7.1 - Convert each of the following: a. 2,500 to...Ch. 7.2 - State Ohms law.Ch. 7.2 - List the three formulas associated with Ohms law.Ch. 7.2 - Calculate the unknown value for each circuit (a)...Ch. 7.2 - A pilot lamp with 12 volts applied to it draws a...Ch. 7.2 - A resistor has a resistance of 220 . The current...Ch. 7.2 - An electric soldering iron with a 40- heating...Ch. 7.2 - A baseboard heater draws a current of 8 A when...
Ch. 7.2 - A sensor module has an internal resistance of...Ch. 7.2 - The current through and the voltage drop across a...Ch. 7.2 - The heating element for an electric floor heating...Ch. 7.2 - How much power is lost in the form of heat when 25...Ch. 7.2 - The voltage drop across a 330- resistor is...Ch. 7.2 - A digital multimeter display indicates a reading...Ch. 7.2 - Calculate the unknown value for each circuit (a)...Ch. 7.2 - Assume that applying 120 volts to a resistive load...Ch. 7.2 - The voltage drop across a 10-W, 330- resistor is...Ch. 7.2 - The cold resistance of a tungsten lamp filament is...Ch. 7.2 - An electric baseboard heater is rated for 1200 W...Ch. 7.2 - A lamp dimmer switch is rated for 5 A at 120 V....Ch. 7.2 - A 400-W 4- public address speaker is to be fused...
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