Question 1

In a balanced three-phase AC circuit, the instantaneous power delivered to the load is constant.

Accepted Answer

A) True 
 B)False

Question 2

A generator with three separate windings, equally spaced around the circle, will produce three different output voltages 120° out of phase with each other.

Accepted Answer

A) True 
 B)False

Question 3

The load voltage, VZ in a ?-Y configuration is equal to ?3/VL.

Accepted Answer

A) True 
 B)False

Question 4

In a three-phase AC generator, the currents in the individual coil windings are commonly called ______________ currents.

Accepted Answer

The answer of In a three-phase AC generator, the currents...

Question 5

In a delta-connected three-phase generator, the phase difference between each phase voltage is

Accepted Answer

A)  0° 
B)  90° 
C)  120° 
D)  180° 
A)  0° 
B)  90° 
C)  120° 
D)  180°

Question 6

In a balanced Y-connected load, the total power is equal to

Accepted Answer

A)  1/3PZ 
B)  3PZ 
C)  1/?3PZ 
D)  ?3PZ 
A)  1/3PZ 
B)  3PZ 
C)  1/?3PZ 
D)  ?3PZ

Question 7

The formula used to calculate total power, PT, for a balanced Y-Y configuration is ______________.

Accepted Answer

The answer of The formula used to calculate total power,...

Question 8

A generator with three separate windings, equally spaced around the circle, will produce

Accepted Answer

A)  three different output voltages 120° out of phase with each other 
B)  three different output voltages 60° out of phase with each other 
C)  three different output voltages 90° out of phase with each other 
D)  three different output voltages 180° out of phase with each other 
A)  three different output voltages 120° out of phase with each other 
B)  three different output voltages 60° out of phase with each other 
C)  three different output voltages 90° out of phase with each other 
D)  three different output voltages 180° out of phase with each other

Question 9

In a Y-connected three-phase AC generator, the formula used to calculate VL is ?3V?.

Accepted Answer

A) True 
 B)False

Exam 28: Three-Phase Ac Power Systems

In a balanced three-phase AC circuit, the instantaneous power delivered to the load is constant.

A generator with three separate windings, equally spaced around the circle, will produce three different output voltages 120° out of phase with each other.

The load voltage, VZ in a ?-Y configuration is equal to ?3/VL.

In a three-phase AC generator, the currents in the individual coil windings are commonly called ______________ currents.

In a delta-connected three-phase generator, the phase difference between each phase voltage is

In a balanced Y-connected load, the total power is equal to

The formula used to calculate total power, PT, for a balanced Y-Y configuration is ______________.

A generator with three separate windings, equally spaced around the circle, will produce

In a Y-connected three-phase AC generator, the formula used to calculate VL is ?3V?.

Introduction

Electricity

Resistors

Ohms Law

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Voltage Dividers and Current Dividers

Analog and Digital Multimeters

Kirchhoff S Laws

Network Theorems

Conductors and Insulators

Batteries

Magnetism

Electromagnetism

Alternating Voltage and Current

Capacitance

Capacitive Reactance

Capacitive Circuits

Inductance

Inductive Reactance

Inductive Circuits

RC and LR Time Constants

Alternating Current Circuits

Complex Numbers for Ac Circuits

Resonance

Filters

Diodes and Diode Applications

Bipolar Junction Transistors

Transistor Amplifiers

Field Effect Transistors

Power Amplifiers

Thyristors

Operational Amplifiers

Filters

The load voltage, V_Z in a ?-Y configuration is equal to ?3/V_L.

In a Y-connected three-phase AC generator, the formula used to calculate V_L is ?3V_?.