Technician A says that on a twin countershaft transmission,the gears on the countershaft are in constant mesh with those on the mainshaft.Technician B says that countershaft gear motion is not transferred to the mainshaft,until a sliding clutch locks a mainshaft gear to the mainshaft.Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

shamaya monroe · Accepted Answer

Final Answer : C, Explanation :  Technician A is correct because in a twin countershaft transmission, the gears on the countershafts are indeed in constant mesh with those on the mainshaft, ensuring that the gears are always engaged but not always transmitting power. Technician B is also correct because the transmission of power from the countershaft gears to the mainshaft gears does not occur until a sliding clutch, also known as a synchronizer, locks a gear to the mainshaft, allowing for the transfer of motion and power.

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