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Questions in engineering

[Done] Technician A says R-134a and R-12 refrigerant gauge manifolds can be interchanged. Technician B says because of differences between R-134a and R-12 gauge manifold calibrations, they cannot be interchanged. Who is right? A. A only. B. B only. C. Both A and B. D. Neither A nor B.

[Done] Provision is normally made for adjusting the alignment of a two-piece driveshaft assembly by using under the carrier bearing. A. U-joints B. Flanges C. Shims D. Driveshafts

[Done] On front-wheel-drive vehicles, power reaches the front wheels through the: A. Transmission. B. Transaxle. C. Drive shaft. D. Transfer case.

[Done] To install portable grounding, what's the first step? A. Connecting with the line B. Connecting with the tower grounding C. Check the circuit voltage

[Done] Which method protects against the hazard of the line becoming energized? A. Protective grounding B. Phase-to-ground C. Insulation covering conductors D. Service Drop

[Done] 5. Ionization within a P-N junction causes a layer on each side of the barrier called the: (a) Depletion region (b) Barrier Voltage (c) Junction (d) Forward voltage

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] How is the size specified for a reciprocating saw? A. Diameter B. Diameter of blade C. Amperage of motor D. Size of chuck

[Done] Which type of ladder is self-supporting, stable, and suitable for open spaces without additional support? A. Step Ladder B. Extension Ladder C. Fixed Ladder D. Job-Made Ladder

[Done] The front section of the two-piece type driveshaft is supported at its rear end by a center bearing called the A. Center bearing B. Carrier bearing C. Holding bearing D. Support bearing