Discussion
Voltage regulator LM 723 is best suited for voltage regulation :
Answer: D
The LM723 is suited to regulation from 2 to 37 V.
The LM723 is a general-purpose adjustable regulator. Its data sheet specifies an output voltage adjustable from 2 V to 37 V, with input voltages from 9.5 V up to 40 V, and an output current of up to 150 mA without an external pass transistor.
The option '9.5 to 40 V' is the input voltage range, not the regulated output. '0 to 40 V' and '0 to 27 V' are wrong because the 723 cannot regulate down to zero; its lowest output is about 2 V.
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