In a pass-transistor regulator, the base transistor voltage is held relatively constant by a

A) JFET B) silicon junction diode
C) zener diode D) NPN transistor


C

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The properties of this material can be altered by changing the carbon content.

a. alloy cast iron b. malleable cast iron c. nodular cast iron d. steel

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Describe the role that purchasing plays in the supply chain

What will be an ideal response?

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A 120 V (rms), 60 Hz source is connected to a full-wave bridge The load is an arc welding machine that can be represented by a resistance of 1 ? in series with an inductive reactance of 3 ?. At a triggering angle of 60o, the current of the load is continuous. Calculate the following:

a. Average voltage across the load
b. Average voltage across the resistive element of the load
c. Average current of the load

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The shaded pole motor ____.

A. has little starting torque B. has excessive starting torque C. has greater efficiency than most split-phase motors D. will start against a heavy starting load

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