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ELECTROTECHNOLOGY ELTK1100 REVIEW #1 1. Give the coded colors for a 2.7k resistor with a tolerance of 5%. Indicate all bands in your answer. (Red, Violet, Red, Gold) 2. Convert the following color code into a resistor. (3.9, 10%) Orange White Gold Silver 3. The resistance of a 1.2k resistor is measured to be 1380. This measurement is within the color coded tolerance for this resistor. What is the color of the tolerance band? Justify your answer. (%Error = 15%, so tolerance must be 20% - No Color) 4. What is the value of the D.C. Milliammeter reading (on the left) if the selector switch is set on 2.5? (1.71mA) 5. What is the value of the D.C. Voltmeter reading (on the right above) if the selector switch is set on 100? (73.8V) 6. A series circuit has resistances of 10, 14, 18 and 22. If the voltage drop of the 18 resistor is measured to be 6.75V, determine the voltage drop across the other resistors, the total voltage and current. (3.75V, 5.25V, 8.25, 24V, 375mA) 7. For the following parallel circuit, find the following: (a) R2. (2000) (b) VT. (135V) (c) R1. (9k) (d) R3. (18k) ELTK1100 Marine Institute Rev 3 154 8. A parallel circuit has resistances of 20, 24, 30 and 120. If the current in the 30 resistor is measured to be 800mA, determine the current in the other resistors, the total voltage and current. (1.2A, 1A, 200mA, 24V, 3.2A) 9. Find these quantities for the following circuit: (a) R2. (500) (b) R1. (750) (c) R3. (800) (d) Add a meter to measure V1. (Voltmeter [connected in parallel, polarities]) (e) Add a meter to measure I3. (Ammeter [connected in series, polarities]) 10. For the following circuit, calculate: (a) total resistance. (100) (b) current in R1 resistance. (450mA) (c) current in R7 resistance. (474mA) (d) voltage drop of the R9 resistor. (12V) (e) voltage drop of the R9 resistor. (33.1V) ELTK1100 Marine Institute Rev 3 155