2-4 test

9. The _______ number on a residential meter's faceplate refers to watt-hours per turn of the disk a. kH b.kW c. kVAH d. kVAR

a. kH

11. Lightning can have an electrical charge up to____? a. 2,000 V b. 100,000 V c. 500,000 V d. 100 million V

d. 100 million V

38. Transformer are normally loaded to ______ of their nameplate rating. A. 80% b. 100% c. 110% d. 125%

d. 125%

10. What type of fault is a distribution system exposed to ?. a. Open-circuit b. Over-current c. Over-voltage d. All of the above

d. All of the above

49. If you are working on a downed line, fed from a single-phase OCR, you should remove the OCR _______? a. Control relay b. Cutout c. Handle d. Primary leads

d. Primary leads

14. An OCR control use a(n) ______ involving the live voltage (kilovolt) and line impedance at key locations to determine the distance to a fault. a. Frequency generator b. Impulse generator c. Megohmmeter d. Program

d. Program

42. Always test voltage and ______ readings before making any changes to an existing customer's 3-phase service. a. Current b. Impedance c. Resistance d. Rotation

d. Rotation

31. A hazard associated with applying armor rods to an energized conductor is _______? a. Damaging the conductor b. Electrolysis c. Induction d. Unwinding, causing cross-Phase

d. Unwinding, causing cross-phase

18. Tower footing must be able to counter ____ and _____ a. Expansion/ contraction of the earth b. External cold/ heat c. Lateral shear / vibration d. Uplift / down-thrust

d. Uplift/ down-thrust

26. A powder-actuated tool is used to install______? a. Automatic sleeves b. Implosive sleeves c. Vibration dampers d. Wedge connectors

d. Wedge connectors

41. Phase _____ is the order in which voltage waveform of a polyphase AC generator reaches its respective peaks. a. Reading b. Reversal c. Rotation d. Sequence

d. Sequence

28. The most common method of sagging has been the ______ method a. Dynamometer b. Return-wave stopwatch c. Sag board d. Target

d. Target

46. Back feed can occur by electricity being transferred through a connected load and ________? a. By induction b. Fault insulator c. Grounding to the switchgear d. Surges or overvoltage from the source

A. By induction

40. A 10 -kilovolt -ampere transformer can provide _______ for as long as 30 seconds without damage a. 15kVA b. 20kVA c. 30kVA d. 100kVA

B. 20kVA

24. When joining copper and aluminum conductors, always ________? a. Put aluminum on the bottom b. Put aluminum on the top c. Used petroleum-based grease spread over both conductors d. Use an automatic sleeve

B. Put aluminum on the top

6. The voltage drop per 1,000 feet of 1/0 copper wire (resistance = 0.122 ohms per 1,000 feet) when 40 amperes of current are flowing through the wire is _______? a. 3.05 V b. 3.26 V c. 4.88 V d. 5.06 V

C. 4.88 V

17. When backfilling an excavation, compaction of _________ to relative density is required for granular soil. a. 50% b. 65% c. 70% d. 90%

C. 70%

3. Maximum EMF is induced when a conductor cuts a magnetic field at _________? a. 30 degrees B. 45 degrees c. 90 degrees d. 180 degrees

C. 90 degrees

47. A portable generator feeding into a utility line does not share the same_________ as the utility line a. Current b. Frequency c. Ground d. Voltage

C. Ground

2. Upon what principle does a transformer operate?. a. Capacitance b. Mutual capacitance c. Mutual inductance d. Self inductance

C. Mutual inductance

1. Inductive reactance is measured in __________? a. Amperes b. Henry's c. Ohms d. Volts

C. Ohms

15. Fault current indicator (FCIs) are used on overhead and underground system FCIs trip when ________? a. A given current level is matched b. Improperly connected to a 3 phase transformer bank c. The circuit current is to low d. The LCD light is improbable

a. A given current level is matched

35. An advantage to paralleling lines, is ______ can share the load. a. A lightly loaded line b. Regulator placement c. Voltage d. Wire size

a. A lightly loaded line

7. Which of the following is NOT a kinda of electrical power. a. Appearance power b. Peak power c. Reactive power d. Real power

a. Appearance power

48. A thumper operates by building up a ______ charge and then discharging it through the cable a. Capacitive b. High ground c. Resistive d. Static

a. Capacitive

19. One method used to ground a transmission steel tower is called ______? a. Counterpoise b. Single ground rod method c. Tangent counter position d. The CW (cold water pipe) method

a. Counterpoise

4. Two wires off a main feeder supply current to a transformer several spans away. The voltage of the feeder at the point of take -off is 4,180 volts. The resistance of the two wires is two ohms, and the transformer draws 40 amperes. What is the line loss?. a. 60 V b. 80 V c. 180 V d. 800 V

b. 80 V

33. One of the most dangerous situations an electrical worker might encounter when working on a energized circuit is______? a. A paralleling circuit b. A phase to phase fault c. Closing a switch d. Fault insulators

b. A phase to phase fault

45. During outages or storm restoration work, ______ Is one of the most dangerous situations an electrical worker can be confronted with. a. A dirty or wet ground b. Back feed c. Installing grounds d. Overvoltage

b. Back feed

37. Transformer losses are referred to as _____ and copper losses a. Coil b. Core c. IR d. Start-up

b. Core

44. It takes as little as 50 volts AC to produce 50 milliamperes, which can cause _____? a. A numbing sensation b. Fibrillation of the heart c. Involuntary bowl movement d. Kidney failure

b. Fibrillation of the heart

12. A _____ fault can be a dead short or partial short circuit, depending on the impedance or resistance between an energized conductor and the object causing the short. a. High resistance b. Impedance c. Power d. Voltage

b. Impedance

39. Which item listed below is NOT used to help cool transformer. a. Fan b. Insulation c. Radiator d. Water jacket

b. Insulation

13. To protect underground distribution system a______ class arrestor is typically used in addition to an arrestor located at the dip pole. a. Heavy-duty b. Light-duty c. Normal-duty d. Secondary

b. Light-duty

34. The two things that need to be done before using phasing equipment are to make sure the phasing equipment is working properly, and to_______ a. Attach one lead from the phasing equipment to ground b. Make sure the lines are energized c. Verify that the voltage regulator is connected to a closed circuit d. Verify the lines are de-energized

b. Make sure the lines are energized

29. The span that is used to calculate initial sag called the ________ span. a. Longest b. Ruling c. Shortest d. Tightest

b. Ruling

30. Dampers or_______ are placed on a conductor given distance ahead of and behind the structure. a. "Bowling balls" b. "Boxing gloves c. "Corona shields" d. "Dogbones"

d. "Dogbones

22. Before another section of a steel tower is placed, at least _____ of the bolts must be in place and tightened on the previous section a. 20% b. 40% c. 50% D. 75%

c. 50%

21. Manufacturers use _______ to protect the steel after the tower has been cut and drilled. A. Aluminum oxide bonding b. Aluminum paint c. Dip galvanizing d. Zine chromium spray

c. Dip galvanizing

16. To prevent tripping from active distribution components, many FCIs are built with a(n) _____? a. Automatic reset after a fault b. Current sensor to limit trip cycles c. High degree of immunity d. Special insulation at the core

c. High degree of immunity

25. A(n) ______ sleeve leaves virtually no space between the conductor and sleeve, or between the conductor strands. a. A.C.S.R. b. Automatic c. Implosive d. Tubular

c. Implosive

5. Voltage drop will________ if the current to the load is increased. a. Decrease b. Have intermediate dips c. Increase d. Not be affected

c. Increase

43. To reverse rotation of a 3-phase motor , you must ________ ? a. Change the drive gear b. Interchange all three leads c. Interchange any two leads d. Re-number the motor leads

c. Interchange any two leads

32. Dampers places on a transmission line there to counter _______ a. Galloping b. Ice loading c. Resonant vibration d. Wind shear

c. Resonant vibration

27. When checking the conductor sag on an existing line, the _______ method is the best method to use. A. Dynamometer b. Eyeball c. Return wave d. Sight and sound

c. Return wave

36. Voltage regulators must be accounted for and _______ prior to closing in disconnects that will tie-in two circuit. a. At line-rated voltage b. De-energized c. Set on neutral position and locked out d. Set to their lowest position

c. Set on the neutral position and locked out

23. Besides the use of the socket wrenches, _______ are the other tools normally used on steel tower construction. a. Channel locks (pump pliers) b. Electrical worker pliers (Klein's ) C. Spud wrenches d. Strap wrenches

c. Spud wrenches

20. When a helicopter is building a tower in sections, ________ are placed on the tower. a. Bent pieces b. Signs c. Temporary brackets d. Workers

c. Temporary brackets

50. Proper grounding and barricading is critical when using a _______ to locate a fault. A. Phase indicator b. Radar scope c. Thumper d. Tone generator

c. Thumper

8. Power factor is the ratio between ______ and _______? a. kVAR peak/ kVA peak b. kW peak/ kVA c. kW peak / kVA peak d. kW peak/ kVAR peak

c. kW peak / kVA peak