b. the heat dissipated in the armature [W] lono c. the braking torque exerted by the 9 ol A separate excited dc generator turning at aw1400 r/min produces an induced voltage of 127 V. The armature resistance is 2 2 and the machine delivers a current of 12 A. Intermediate level Calculate b conn booubni er snio a. the terminal voltage [V] b. the heat dissipated in the armature [W] dguordi ded armature [N m]
b. the heat dissipated in the armature [W] lono c. the braking torque exerted by the 9 ol A separate excited dc generator turning at aw1400 r/min produces an induced voltage of 127 V. The armature resistance is 2 2 and the machine delivers a current of 12 A. Intermediate level Calculate b conn booubni er snio a. the terminal voltage [V] b. the heat dissipated in the armature [W] dguordi ded armature [N m]
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
#9 letters a and b
![80
188
2 Why are the brushes of a dc machine always
placed at the neutral points?
12 Fig.
curve of a se
when it revo
3.
Describe the construction of a commutator.
exciting cur
How is the induced voltage of a separately
1330 r/min.
4
excited dc generator affected if
a. the speed increases?
b. the exciting current is reduced?
13 Referring to
coil D is mo
shown. Calc
coils A, B, ar
How do we adjust the voltage of a shunt
generator?
The terminal voltage of a shunt generator
decreases with increasing load. Explain.
14 Referring to
induced in cc
tated by 90°;
7 b Explain why the output voltage of an over-
compound generator increases as the loadh
increases.
15 Brush x is po
Fig. 11b. Sho
coils. Does th
bre
(0) turns through
Explain the difference between shunt, com-
pound, and differential compound generators
a. as to construction tiovl
b. as to electrical properties
16 The generator
960 r/min and
Calculate the i
Intermediate level
each armature
9 ol A separate excited dc generator turning at
vaw 1400 r/min produces an induced voltage of
127 V. The armature resistance is 2 2 and
the machine delivers a current of 12 A.
a. How many
generator in
b. If the machi
(g)
(b)
conm
booubni er sunlo
current of 1:
flowing in e
Calculate
a. the terminal voltage [V]
Advanced level
18 The voltage bet
240 V in the ger
armature [N m]
Why can we say
segments 3 and
Referring to Fig
10 percent?
d the polarity of the field is reversed?
of Ey when the
ху
clockwise.
20 a. In Fig. 38 det
between comr
a shunt field of 2000 turns and
generator hac
knowing that t
clockwise.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F585e4a80-646c-4418-ada9-cb992a2ce44b%2F968defef-afc3-4f82-af86-be676aa9933d%2F6uy0ei.jpeg&w=3840&q=75)
Transcribed Image Text:80
188
2 Why are the brushes of a dc machine always
placed at the neutral points?
12 Fig.
curve of a se
when it revo
3.
Describe the construction of a commutator.
exciting cur
How is the induced voltage of a separately
1330 r/min.
4
excited dc generator affected if
a. the speed increases?
b. the exciting current is reduced?
13 Referring to
coil D is mo
shown. Calc
coils A, B, ar
How do we adjust the voltage of a shunt
generator?
The terminal voltage of a shunt generator
decreases with increasing load. Explain.
14 Referring to
induced in cc
tated by 90°;
7 b Explain why the output voltage of an over-
compound generator increases as the loadh
increases.
15 Brush x is po
Fig. 11b. Sho
coils. Does th
bre
(0) turns through
Explain the difference between shunt, com-
pound, and differential compound generators
a. as to construction tiovl
b. as to electrical properties
16 The generator
960 r/min and
Calculate the i
Intermediate level
each armature
9 ol A separate excited dc generator turning at
vaw 1400 r/min produces an induced voltage of
127 V. The armature resistance is 2 2 and
the machine delivers a current of 12 A.
a. How many
generator in
b. If the machi
(g)
(b)
conm
booubni er sunlo
current of 1:
flowing in e
Calculate
a. the terminal voltage [V]
Advanced level
18 The voltage bet
240 V in the ger
armature [N m]
Why can we say
segments 3 and
Referring to Fig
10 percent?
d the polarity of the field is reversed?
of Ey when the
ху
clockwise.
20 a. In Fig. 38 det
between comr
a shunt field of 2000 turns and
generator hac
knowing that t
clockwise.
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