Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Textbook Question
Chapter 17, Problem 18RQ
Capacitors are used after the converter to
A. smooth out the DC current.
B. suppress the noise.
C. change the voltage frequency.
D. reduce the voltage.
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In DC machine,
used to collect the
current from the armature winding.
The linear variable differential transformer transducer is
a.
Resistive transducer
b.
Capacitive transducer
c.
Non-inductive transducer
d.
Inductive transducer
2/. The _____________ between the windings of a transformer is the same.
current
induced emf
voltage
frequency
Chapter 17 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 17 - The two popular operating voltages for residences...Ch. 17 - Prob. 2RQCh. 17 - Is the resistance in the start winding greater or...Ch. 17 - Which of the following devices may be wired into...Ch. 17 - Prob. 5RQCh. 17 - Define BEME.Ch. 17 - Why is the hermetic compressor motor manufactured...Ch. 17 - The two types of motors used for hermetic...Ch. 17 - How does power pass through the compressor shell...Ch. 17 - The two types of relays used to start hermetic...
Ch. 17 - A PTC device is used A. to start a hermetic...Ch. 17 - True or False: Three-phase motors have low...Ch. 17 - Prob. 13RQCh. 17 - Why is it desirable to have a two-speed...Ch. 17 - True or False: All electric motors must be cooled...Ch. 17 - True or False: An SCR is an electronic switch.Ch. 17 - Prob. 17RQCh. 17 - Capacitors are used after the converter to A....Ch. 17 - The converter A. changes the frequency of the...Ch. 17 - The inverter A. adjusts the frequency. B. adjusts...Ch. 17 - Briefly describe the operation of the three...
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- An open winding in an electric motor means that A. the winding is making contact with the motor frame. B. one winding is making contact with another winding. C. a wire in one winding is broken. D. the centrifugal switch to the start winding is open.arrow_forwardOhm's law for determining voltage is _______.arrow_forwardThe large interconnecting line between the indoor and outdoor coil is the _____line.arrow_forward
- Name two methods of sensing the current flow through the shunt field.arrow_forwardThe standard emf and galvanic series are different in three ways; they are andarrow_forwardThe linear variable differential transformer transducer is O a. Inductive transducer O b. Capacitive transducer O c. Resistive transducer O d. Non-inductive transducerarrow_forward
- What component steps down the voltage to the low-voltage value?arrow_forwardThe converter A. changes the frequency of the power. B. changes AC to DC. C. is a switch. D. is used only with DC motors.arrow_forwardThe TRIAC can be triggered on by applying voltage. a. A positive at the gate b. A negative at the gate How TRIAC is different from SCR? State your observations below. c. both a & barrow_forward
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