Select the choice that best answers the following question. Which bearing does not require lubrication? a) Steel ball bearings b) Chrome steel plain bearing c) Polymeric journal bearing d) Bronze linear bearing on

Select the choice that best answers the following question. Which of the following is the function of a bearing? a) Supports rotary shaft b) Permits shaft to carry heavy loads c) Allows shaft to rotate smoothly d) All of the above

Select the choice that best answers the following question. Which key is normally used in small machines? a) Round key b) Woodruff key c) Sunken key d) Saddle key III

Select the choice that best answers the following question. Which of the following is a type of DC motor? a) Series-wound b) Shunt-wound c) Compound-wound d) All of the above

More sensitive multimeters have higher input resistance to smaller circuit currents and therefore,: a) Does not affect voltage reading much b) Supply less accurate voltage readings II

__ is the single most important component to your engine's health. Make your selection below. Then, click or tap Submit. ) Transmission Fluid Brake Fluid Engine Oil Battery Terminals

Which of the following statements is true about the use of grounding electrodes? A ground rod is required to serve as the grounding electrode for the service as well as for equipment supplied by the service. A ground rod is permitted to serve in place of the equipment grounding conductor so long as it has 8 ft in contact with the earth.

Which of the following statements about splicing or connecting a grounding electrode conductor is not true? It is permitted to splice or connect the grounding electrode conductor only by exothermic welding or irreversible compression connectors. It is permitted to connect sections of copper busbars together to form the grounding electrode conductor. It is permitted to connect grounding electrode conductors together by using a copper busbar not less than 1/4in.times 2in.(6.4mmtimes 50mm) Listed wire connectors or exothermic welding is permitted to be used to connect grounding electrode taps to the busbar.

Which of the following statements about creating a grounding electrode system is not true? All grounding electrodes that are available at the building must be bonded together. All grounding electrodes that are present at the building must be bonded together. If present, the following electrodes must be bonded together: underground metal water pipe and a ground ring. If present, the following electrodes must be bonded together. metal structural member electrode and a ground rod.

82. Refrigerant removal from a low-pressure system starts with; A. vapor removal. B. liquid removal. C. vapor and liquid removal. D. oil separation.

Hot Questions

9 Multiple Choice 1 point Which of the following is not a measurement function of a DMM? Pressure Voltage Continuity Resistance

An oilless lubricating system uses a well or reservoir in the end bell. A True B False Question 8 Which of the following statements about replacement capacitors is false? A They should have the same capacitance value as the original. B They should have a capacitance value up to $25\% $ greater than the original. C They should never be undersized. D They may have a capacitance value up to $10\% $ greater than the original.

Split-phase motors use a(n) __ to disconnect the start windings as the motor approaches running speed. A unloader B VFD C squirrel cage rotor D centrifugal switch Question 12 On a capacitor-start,induction-run motor, a centrifugal switch or relay disconnects __ when the motor reaches about $75\% $ of its rated speed. A the start winding only B the start capacitor only C both the start winding and start capacitor D both the start capacitor and run capacitor

Just before lifting off a rotary wing pilot must check the weather at the scene for a medical transport. In addition the pilot must also: Know the condition of the patient. Check the weather at the receiving hospital. Inventory all equipment on board the aircraft. Know the experience of the crew setting up the landing zone.

Advantages of ECMs include the following, except __ A ability to maintain constant airflow B easily replaceable brushes C efficient performance D variable speed Question 22 Important motor information such as rated voltage time rating, insulation class frequency, phase, and horsepower can be found on the __ A motor frame B motor nameplate C bearings D shaft

Which type of discontinuity is NEVER visible during visual inspection? underbead cracking porosity toe cracks undercut

The NEC in Table 210.24 shows that the minimum conductor size for branch-circuit wiring is __ 16 AWG 20 AWG 18 AWG 14 AWG

424170 What is the minimum number of trenches that should be dug across a truck-bed, railcar, or barge to acquire a representative sample? 3 (three) 4 (four) 5 (five) 7 (seven)

Nickel alloys should not be heat-treated. Select one: True False

The operator interface audible alarm sounds when there is a hydrogen event. Select true or false. True False