If the given crank shaft moves clockwise, then in which directions will the alternator and the fan move?
Correct answer: C. Clockwise and anti-clockwise respectively.
- A. Both move anti-clockwise.
- B. Anti-clockwise and clockwise respectively.
- C. Clockwise and anti-clockwise respectively.
- D. Both move clockwise.
Explanation
In a typical mechanical setup with gears, the direction of movement is determined by the engagement of these gears. When the crankshaft moves clockwise, it typically drives the alternator directly in the same direction. The fan, however, is often connected through another gear, causing it to move in the opposite direction, i.e., anti-clockwise. Therefore, Option C is correct. Options A and D are incorrect because they suggest that both components move in the same direction, which is not typical in this scenario. Option B suggests an unusual gear setup that isn't normally used.
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Scientific reasoning evaluates hypotheses through observations, variables, controls, measurements and experimental results. Questions involve identifying independent and dependent variables, recognising a fair test, interpreting tables or graphs, distinguishing evidence from opinion, and deciding whether data supports, rejects or leaves a hypothesis unresolved.
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