Which among the following represents the closed-loop system? I. Television remote control II. Air-conditioner II. Missile launcher IV. Thermostat heater А. I, II, and III В. I, II, and IV C. II, II, and IV D. I, III, and IV B.

Which among the following represents the closed-loop system? I. Television remote control II. Air-conditioner II. Missile launcher IV. Thermostat heater А. I, II, and III В. I, II, and IV C. II, II, and IV D. I, III, and IV B.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter15: Residential Air-conditioning Control Systems

Section: Chapter Questions

Problem 15RQ

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

Question

Which among the following represents the closed-loop system?
I. Television remote control
II. Air-conditioner
II. Missile launcher
IV. Thermostat heater
А.
I, II, and III
В.
I, II, and IV
C.
II, II, and IV
D.
I, III, and IV
B.

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