Two-phase motors that are especially designed for ____ applications use the same rules for determining full-load currents as single-phase motors.

A. high speed-high torque
B. low speed-high torque
C. high speed-low torque
D. low speed-low torque


Answer: B

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What is another name given to solid-state, reduced-voltage starters because of their ability to provide a smoother, stepless start and acceleration?

a. Kick-start controllers b. Soft-start controllers c. Smooth-start controllers d. Boost-start controllers

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John’s wheat drill has 8-inch row spacing. What is the row spacing in centimeters?

What will be an ideal response?

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Following up on the work of the engineer in problem 5.19, another engineer proposes adding several modifications to the steam power plant. He proposes in his design to have the heat be added to the steam at 550oC, the heat still be rejected to cooling water at 20oC, and that 300 MW of power will be produced from a heat input of 400 MW. Is this process possible?

Given: Proposed: TH = 550oC = 823 K; TC = 20oC = 293 K; Q?H=400 MW; W?=300 MW

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