AT&T TKT II Complete Exam Study Guide (Questions and Answers) Already Graded A+

AT&T TKT II Complete Exam Study Guide (Questions and Answers) Already Graded A+ 1. The rate of electron flow, the unit for measuring electrical current; the abbreviation is amp. - ANSWER Amperes 2. When the frequency of the applied voltage increases capacitive reactance increases, decreases, or remains the same. - ANSWER decreases 3. Convert 6500 ohms to K ohms - ANSWER 6.5 k 4. Convert 33 mill amps to amps - ANSWER .033 5. 1 micro Henry is__________ - ANSWER .000001 h 6. The impedance of an AC circuit is equal to - ANSWER The total opposition to current flow 7. A flow of electric charge that regularly reverses its direction. - ANSWER Alternating Current (AC) 8. A series circuit contains a pure inductance with a reactance of 200 ohms, a resister of 1 k ohm, and a capacitor with a reactance of 250 ohms. The total impedance will be________ - ANSWER 1450 ohms 9. The DC resistance of a conductor is determined by_______ - ANSWER length, thickness, and temperature 10. If the space between the plates capacitor is doubled, the capacity will be________ - ANSWER 1/2 11. The Parallel circuit. - ANSWER The voltage is the same for all branches 12. The amount of magnetism left in an electromagnet after current been removed - ANSWER Residual magnetism 13. A primary cell differs for a secondary cell - ANSWER A secondary cell can be charged, A primary cell can not be recharged 14. Has the current passing through a conductor increases, the magnetic flux surrounding the wire will _________ - ANSWER Increase 15. If 3 unequal resistors are connected in parallel across a 120 volt line - ANSWER 120 volt exits on across all resistors 16. Mutual inductance in a coil is caused by - ANSWER A variable flux in 1 coil cutting across anther coil 17. IF a coil across a 500 cycle generator has the inductive reactance of 30 ohms, increasing the frequency to 1000 cycles will ___________ - ANSWER Double the inductive reactance 18. If the AC voltage reaches its positive maximum at the same time as current reaches 0, voltage and current are said to be__________ - ANSWER 45 degrees out of phase 19. If a resistor of 5 mega ohms is placed in series with a capacitor of .005 micro farads, the time constant would be__________ - ANSWER .025 seconds 20. A multi-meter should offer maximum or minimum resistance. - ANSWER maximum 21. In an AC current, if the power factor = .5, then the ________ power is 1/2 the __________ power - ANSWER True/apparent 22. In the RCL circuit, the phase difference between voltage and current is ____________ - ANSWER less than 90 degrees 23. If an electrical door bell has a resistance of 70 ohms and requires a current of 2 amps, the voltage necessary to operate the bell is________ - ANSWER .14 KV 24. A volt is a measure of this - ANSWER electromotive force (emf) 25. When the applied frequency is increased in a circuit containing an inductor and a capacitor - ANSWER Inductive reactance increases 26. 200 micro farads is the same as - ANSWER 2 x 10-4 Farads 27. Base unit of charge - ANSWER Coulomb 28. The reactance of a capacitor of .005 fd, at a frequency of 1000 Hz will be________ - ANSWER 3.18 K ohms 29. electrons will always move toward the more__________ charge - ANSWER Positive 30. Inductance if that quality of a circuit that opposes any changes in _____________ - ANSWER Current 31. A capacitor apposes any change in __________ - ANSWER Voltage 32. Two inductance coils of 60 and 80 micro henries are connected in series, but without any mutual coupling. The total inductance would be_________ - ANSWER 140 micro henries 33. Resistors of 10, 15, and 6 ohms are connected in parallel. The total resistance is_________ - ANSWER 3 ohms 34. The AC voltage across a pure inductance is said to_______ - ANSWER Lead the current by 90 degrees 35. The two materials most commonly used in the manufacture of transistors are_______ - ANSWER Germanium and Silicon