Holt ProTech Electricity Assessment Question Title * 1. What is your first and last name? Question Title * 2. What is the name of your company? Question Title * 3. _____________________ needed to correctly test a starting system on an engine. An ohmmeter is A voltmeter is An ammeter is Either an ammeter or ohmmeter is Both an ammeter and a voltmeter are I do not know Question Title * 4. 1 M Ohm is equal to: .0001 K Ohm 10 K Ohm 100 K Ohm 1000 K Ohm I do not know Question Title * 5. A duty cycle signal is ______________________________. a digital high / low frequency voltage an on / off voltage a % ratio of voltage on versus off time linear increase / decrease of voltage I do not know Question Title * 6. A magnetic speed pick up provides a (an) _______ signal to the ECM. AC Frequency DC Frequency Analog Frequency Digital Frequency Pulse Width Modulated I do not know Question Title * 7. A voltage drop reading is taken ___________________________. from the input side of the component to battery ground from the output side of the component to battery ground through the input and output connections of the component from the outlet side of the component to battery positive I do not know Question Title * 8. A voltmeter is usually connected in ________________ in a circuit. series parellel opposition to current flow with current flow I do not know Question Title * 9. AmpSeal connector sockets and pins are attached to the wires by __________________. acid core solder rosin core solder crimping with tooling and soldered crimping with tooling I do not know Question Title * 10. An alternator used to charge batteries ________________. produces AC electricity produces DC electricity produces AC voltage and sends it through a bridge rectifier to convert it to DC voltage produces DC voltage and sends it through a bridge rectifier to step down voltage I do not know Question Title * 11. An ammeter is usually connected in ________________ in a circuit. series parallel opposition to current flow with current flow I do not know Question Title * 12. Before performing a continuity test on a component with an ohm meter, you should: make sure it is receiving source voltage put the red lead to positive and black lead to negative poles isolate it from the circuit put the red lead to negative and black lead to positive poles I do not know Question Title * 13. Deutsch connector sockets and pins are attached to the wires by __________________. acid core solder rosin core solder crimping with tooling and soldered crimping with tooling I do not know Question Title * 14. Deutsch receptacles _______________________ . only contain pins only contain sockets may contain either pins or sockets may contain both pins and sockets I do not know Question Title * 15. Diodes can be accurately tested using ___________________. an oscilloscope digital volt ohm meter continuity light either B or C I do not know Question Title * 16. During a visual inspection of a relay, if you find the housing cracked, you should: seal the crack with epoxy resin replace the relay seal the crack with silicone check it with a multi-meter I do not know Question Title * 17. Electrical power is measured in _____________________. volts amperes (amps) ohms watts I do not know Question Title * 18. Electrical resistance is measured in _____________________. volts amperes (amps) ohms watts I do not know Question Title * 19. Electromotive force is measured in _____________________. volts amperes (amps) ohms watts I do not know Question Title * 20. Four 12-volt batteries connected in parallel supply _______________ volts. 3 12 24 48 I do not kmow Question Title * 21. Generators charging batteries produce ___________________. AC voltage DC voltage AC frequency DC frequency I do not know Question Title * 22. If a conventional battery electrolyte level is low, _____________ should be added to the low cells. sulfuric acid hydrochloric acid electrolyte water I do not know Question Title * 23. If a series circuit has a source voltage of 24 volts and the load has a resistance of 6 ohms, what is the amperage through the circuit? 144 amps 72 amps 12 amps 4 amps I do not know Question Title * 24. If a voltage reading across pins B and C on a harness from an ECM to an analog sensor is 6.4 volts, ___. it indicates a pull-up voltage is coming from the ECM the ECM is shorted internally the harness is shorted it indicates a line short to a digital supply circuit I do not know Question Title * 25. In a series circuit with a 3 amp current draw, the voltage drop across a 2 ohm resistor would be _______. 2/3 volt 1 ½ volts 1 volt 6 volts I do not know Question Title * 26. It is best for the battery to charge a battery at __________. 2 amps 20 amps 30 amps 50 amps I do not know Question Title * 27. Of the following, the best disconnect switch in a 24 volt electrical system is the one with a voltage drop of _________. .2 3 12 24 I do not know Question Title * 28. The ___________ must be calibrated if any component in the engine gear train is changed. speed / timing sensor(s) throttle position sensor injector low idle I do not know Question Title * 29. The circuit protection ___________________ the circuit. may be placed in any location in should be at the end of should be at the beginning of should be at the battery ground connection of I do not know Question Title * 30. The injection verification test is performed on _____________________ engines. EUI MEUI-C HEUI Common Rail I do not know Question Title * 31. The most accurate method of testing the Caterpillar lighting circuit is by ___________. resistance measurement ampere measurement voltage drop measurement calculate Watts I do not know Question Title * 32. To properly test an alternator on a machine, a technician would require the following tools in order to perform the test: Voltmeter only Ammeter only Voltmeter and Ammeter Battery load tester will do it all I do not know Question Title * 33. Viewing a schematic you find a wire that has 304-W-10, this tells you: Harness number, white, and 10 gauge Harness number, white, and 10 wire harness Circuit number, white, and 10 meter long harness Circuit number, white, and 10 gauge wire I do not know Question Title * 34. When measuring the resistance to current flow in a battery cable, the correct procedure to use is: A current test with an ammeter A voltage drop with a volt meter A resistance test with an Ohm meter A frequency test on DC HZ I do not know Question Title * 35. When testing a variable resistor with a Digital Multimeter you should note the meter readings when: the resistor is set at 0 ohms the resistor it is set to maximum resistance the resistor it is set in the center position the resistor is operated through a full range of movement I do not know Question Title * 36. When testing electrical circuit terminal connections you should: use a clean needle probe to penetrate the insulation and reach the wire use the appropriate meter to read in the middle of the range for that component clean the probes never probe wire insulation I do not know Question Title * 37. Which of the following parameters would a magnetostrictive sensor normally monitor? Shift lever position Speed Cylinder position Both A and B Direction of rotation I do not know Question Title * 38. Which of the following would make an electromagnetic coil field stronger? Increase the amount of poles Decrease the current Increase the current Turn the coil end for end I do not know Question Title * 39. Which wire has the LEAST resistance? 10 gauge wire, 10 feet long 14 gauge wire, 20 feet long 26 gauge wire, 50 feet long All wires are the same I do not know Question Title * 40. Which wire would make the best conductor? a wire with a resistance of 24 ohms a wire with a multi-meter reading of OL a wire with a resistance of 12 ohms a wire with a resistance of 8 ohms I do not know Question Title * 41. __________ used for C9.3 ACERT engine fuel injectors. Electronic (E-) trim is Trim Files are Adaptive (A-) trim is Both A & B Both B & C Question Title * 42. Item 15 in the schematic represents a: Sensor Breaker Switch Relay I do not know Question Title * 43. Item 17 in the schematic represents a: Sensor Breaker Switch Relay I do not know Question Title * 44. Item H in the schematic represents a: Connector assembly part number Connector assembly schematic identification number Harness assembly part number Harness assembly schematic identification number I do not know Question Title * 45. The symbol shown is a: Manual Circuit Breaker Potentiometer Resistor Fusible link Variable resistor I do not know Question Title * 46. The symbol shown is a: Fusible link Capacitor Automatic reset circuit breaker fuse manual reset circuit breaker I do not know Question Title * 47. The symbol shown is a: cylinder manual reset Circuit Breaker Automatic reset Circuit Breaker Solenoid fusible link I do not know Question Title * 48. The image shown is a: ground spade connector manual Circuit Breaker internal or chassis ground intermittent connection I do not know Question Title * 49. The symbol shown is a: fuse automatic circuit breaker manual circuit breaker 10 amp resistor fusible link I do not know Question Title * 50. The symbol shown is a: transistor fuel solenoid solenoid control valve alternator relay I do not know Question Title * 51. The symbol shown is a: hard wired connector ground manual circuit breaker internal ground intermittent connection I do not know Question Title * 52. The symbol shown is a pressure sender flow switch pressure switch level sender level switch I do not know Done