Q1-A cable composed of 2mm diameter conductor covered with 1mminsulating material is found to have an insulation resistance of480M22/Km. What thickness of similar material would be requiredfor 3mm diameter conductor in order to have an insulationresistance of 960MS/Km?Q8-In a 2-pole d.c machine the winding of the armature is:a-Double layer lap winding.b- Double layer wave winding.C- Single layer lap winding.d- Single layer wave winding.Q11-In a single phase power transformer. the secondary current is afunction of the primary or the primary is a function of thesecondary explain with the aid of diagrams.Q19-An inductor of 0.5H inductance and 902 resistance is connected inparallel with a 20μF capacitor. The resonance frequency will be:a-316 rad/Sec.260 rad/Sec.1 - CRLºc-92 rad/Sec.22- Tec√I-CR²Q20-La-Suggest a control gate derive circuit for a triac, which is used tocontrol a fan regulator. The gate signals should be synchronizedwith the input voltage.0.822b-The former fan regulator is used to control the Iraqi (Dyala) fan. Theinput a.c voltage is 240V at 50Hz. The maximum desired outputpower is 120W at a power factor of 0.8. Calculate:I-The maximum rms current rating of the triac.II-The peak current of the triac.2015

Resistance is given by,Given:Diameter (First conductor)=2 mmr1=radius of first conductor=1…

Q1-A cable composed of 2mm diameter conductor covered with 1mm insulating material is found to have an insulation resistance of 480M22/Km. What thickness of similar material would be required for 3mm diameter conductor in order to have an insulation resistance of 960MQ/Km?

Q1-A cable composed of 2mm diameter conductor covered with 1mm insulating material is found to have an insulation resistance of 480M22/Km. What thickness of similar material would be required for 3mm diameter conductor in order to have an insulation resistance of 960MQ/Km?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.1P: The Aluminum Electrical Conductor Handbook lists a dc resistance of 0.01558 ohm per 1000 ft at 20C...

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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

Q1-A cable composed of 2mm diameter conductor covered with 1mm
insulating material is found to have an insulation resistance of
480M22/Km. What thickness of similar material would be required
for 3mm diameter conductor in order to have an insulation
resistance of 960MS/Km?
Q8-In a 2-pole d.c machine the winding of the armature is:
a-Double layer lap winding.
b- Double layer wave winding.
C- Single layer lap winding.
d- Single layer wave winding.
Q11-In a single phase power transformer. the secondary current is a
function of the primary or the primary is a function of the
secondary explain with the aid of diagrams.
Q19-An inductor of 0.5H inductance and 902 resistance is connected in
parallel with a 20μF capacitor. The resonance frequency will be:
a-316 rad/Sec.
260 rad/Sec.
1 - CR
Lº
c-92 rad/Sec.
2
2- Tec
√I-CR²
Q20-
L
a-Suggest a control gate derive circuit for a triac, which is used to
control a fan regulator. The gate signals should be synchronized
with the input voltage.
0.822
b-The former fan regulator is used to control the Iraqi (Dyala) fan. The
input a.c voltage is 240V at 50Hz. The maximum desired output
power is 120W at a power factor of 0.8. Calculate:
I-The maximum rms current rating of the triac.
II-The peak current of the triac.
2015

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