Question 153Electricity/Electronics - 1st Asst/Chief70% to pass
A carbon resistor has the following color bands; band 1 is yellow, band 2 is violet, band 3 is yellow, and band 4 is silver. What is the value of the resistor in ohms, as well as the tolerance? Illustration EL-0103
AI Explanation
The correct answer is D) 470,000 ohms + or - 10%.
To determine the value of the resistor, we need to interpret the color bands according to the standard resistor color code. The first two bands represent the first two digits of the resistance value, while the third band represents the multiplier. The fourth band indicates the tolerance.
In this case, the color bands are yellow (4), violet (7), and yellow (4), which translates to a resistance value of 470,000 ohms. The silver fourth band indicates a tolerance of +/- 10%.
The other options are incorrect because they do not correctly interpret the color bands or the tolerance value.
Related Questions
#151 What is the basic "control action" of a magnetic amplifier dependent upon? #152 What will happen to a carbon resistor operating in electrical equipment that is NOT properly cooled? #154 Although saturable reactors are extremely useful in some applications, why is their gain low? #155 A saturable-core reactor operates on the principle of controlling a load winding's inductance by changing the permeability of the core. How is this accomplished? #156 A carbon resistor has a resistance of 50 ohms, and a tolerance of 5 percent. What would be the respective colors indicated for bands 1, 2, 3 and 4 for this resistor as shown in figure "A" of the illustration? Illustration EL-0103