Logical Reasoning

PT134 · S2 · Q7 Inertia affects the flow

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Inertia affects the flow of water pumped through a closed system of pipes.

Given

Inertia affects the flow of water pumped through a closed system of pipes.

When the pump is first switched on, the water, which has mass, takes time to reach full speed.

When the pump is switched off, inertia causes the decrease in the water flow to be gradual.

The effects of inductance in electrical circuits are similar to the effects of inertia in water pipes.

7.

The information above provides the most support for which one of the following?

  1. Correct

    The rate at which electrical

    Why this is right

    The first three statements combine to imply that inertia affects the rate that water flows in a closed circuit of pipes. Since the effects of inductance in electrical circuits is similar to the effects of inertia in water pipes, inductance affects the rate at which electrical currents flow.

    Skill tested: Most Supported · how this choice captures the argument's function is the move to repeat next time.

    80% picked this

  2. The flow of electrical current

    Unsupported Relationship

    This confuses the analogous relationship by bringing inertia into electrical circuits even though inductance plays the role of inertia in electrical circuits.

    7% picked this

  3. Inertia in the flow of

    Too Strong

    This suggests that inertia is caused by inductance. While inertia and inductance both affect the rate at which water and electricity flow respectively, to suggest that inductance causes inertia goes too far.

    4% picked this

  4. Electrical engineers try to minimize

    Out of Scope

    The goals of electrical engineers are not discussed in the statements.

    1% picked this

  5. When a water pump is

    Unsupported Relationship

    This suggests that when a water pump is switched off the pump continues to pump water for a second or two, while the statements suggest that when a pump is switched off inertia causes the decrease in the water flow to be gradual. That doesn’t mean the pump continues to pump water.

    9% picked this

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