ac/dc saca study guide
Study online at https://quizlet.com/_hq8a48
1. How many degrees apart are the phases of a balanced three phase system?-
: 120
2. What does an electrical schematic not show?: Physical connections
3. Resistance is measured in units of?: Ohms
4. What is the power formula?: P=IxE
5. What is power measured in?: Watts
6. What is the function of an inductor?: It opposes a change in current flow
7. A coil is a_________?: Output
8. Which of the following is an output?: Solenoid
9. What is the formula to solve for current?: I=E/R
10. When troubleshooting a circuit, what can be said if the total resistance of
the parallel circuit does not change when a branch is removed?: An open exists in the
removed branch
11. The unit for electromotive force (emf) is?: Volt
12. What is the relationship of the applied voltage across two electrical compo-
nents in parallel with each other?: They are the same
13. Which feature of a ground circuit creates a safe path for current?: Low resistance
to earth
14. An ohmmeter is reading total circuit resistance reads 0 ohms when all
branches are connected and reads 200 ohms when a branch is disconnected.
What condition exists?: There is a short in the disconnected branch
15. A series circuit has a total of three resistors, 5 ohms, 3 ohms, and 16 ohms.
What is the Rt of this circuit?: 24 ohms
16. When testing an indicator light, one must first remove it from the circuit and
place a multimeter across its threaded area and base or input leads. What is
the next step in testing the indicator light?: Set the meter for resistance and check the reading
17. What is the secondary coil voltage of a transformer that has 120v supplied,
400 turns on the primary and 100 turns on the secondary?: 30v
18. A voltmeter is connected in a circuit by?: Placing the test leads in parallel with the circuit device
19. To measure current in a current, how is the meter placed in the circuit?: In series
with the circuit or component
20. Which of the following is the formula for TR: TR=NP/NS
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Study online at https://quizlet.com/_hq8a48
1. How many degrees apart are the phases of a balanced three phase system?-
: 120
2. What does an electrical schematic not show?: Physical connections
3. Resistance is measured in units of?: Ohms
4. What is the power formula?: P=IxE
5. What is power measured in?: Watts
6. What is the function of an inductor?: It opposes a change in current flow
7. A coil is a_________?: Output
8. Which of the following is an output?: Solenoid
9. What is the formula to solve for current?: I=E/R
10. When troubleshooting a circuit, what can be said if the total resistance of
the parallel circuit does not change when a branch is removed?: An open exists in the
removed branch
11. The unit for electromotive force (emf) is?: Volt
12. What is the relationship of the applied voltage across two electrical compo-
nents in parallel with each other?: They are the same
13. Which feature of a ground circuit creates a safe path for current?: Low resistance
to earth
14. An ohmmeter is reading total circuit resistance reads 0 ohms when all
branches are connected and reads 200 ohms when a branch is disconnected.
What condition exists?: There is a short in the disconnected branch
15. A series circuit has a total of three resistors, 5 ohms, 3 ohms, and 16 ohms.
What is the Rt of this circuit?: 24 ohms
16. When testing an indicator light, one must first remove it from the circuit and
place a multimeter across its threaded area and base or input leads. What is
the next step in testing the indicator light?: Set the meter for resistance and check the reading
17. What is the secondary coil voltage of a transformer that has 120v supplied,
400 turns on the primary and 100 turns on the secondary?: 30v
18. A voltmeter is connected in a circuit by?: Placing the test leads in parallel with the circuit device
19. To measure current in a current, how is the meter placed in the circuit?: In series
with the circuit or component
20. Which of the following is the formula for TR: TR=NP/NS
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