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Recent questions tagged transmission
+3
votes
1
answer
For a.c. transmission lines less than 80 km in length, it is usual to lump the line capacitance at
asked
Apr 7, 2019
in
Mathematics
by
kratos
distribution
transmission
+1
vote
1
answer
....... are the conductors, which cannect the consumer'* terminals to the distribution
asked
Apr 5, 2019
in
Mathematics
by
kratos
distribution
transmission
+3
votes
1
answer
Which of the following are connected by the service mains?
asked
Apr 3, 2019
in
Mathematics
by
kratos
distribution
transmission
+1
vote
1
answer
A single-phase a.c. distributor 500 m long has a total impedance of (0.02 + j 0.04) Ω and is fed from one end at 250V. It is loaded as under :
asked
Apr 2, 2019
in
Mathematics
by
kratos
distribution
transmission
+3
votes
1
answer
Surge absorbers protect against .......... oscillations
asked
Mar 26, 2019
in
Mathematics
by
kratos
distribution
transmission
+1
vote
1
answer
A 2-phase, 3-wire a.c. system has a middle conductor of same cross-sectional area as the outer and supplies a load of 20 MW.
asked
Mar 24, 2019
in
Mathematics
by
kratos
distribution
transmission
+2
votes
1
answer
The capacitances per kilometer of a 3-phase cable are 0.63 µF between the three cores bunched and the sheath
asked
Mar 23, 2019
in
Mathematics
by
kratos
distribution
transmission
+2
votes
1
answer
Find the following for a single-circuit transmission line delivering a load of 50 MVA at 110 kV and p.f. 0.8 lagging :
asked
Mar 22, 2019
in
Mathematics
by
kratos
distribution
transmission
+2
votes
1
answer
Solid grounding is adopted for voltages below
asked
Mar 20, 2019
in
Mathematics
by
kratos
distribution
transmission
+1
vote
1
answer
y = 5sin (3ωt + ϕ) where ω and ϕ are constant Find dy/dt (A) 15ω cos (3ωt + ϕ)
asked
Mar 18, 2019
in
JEE
by
kratos
distribution
jee
simple harmonic motion
jee mains
transmission
harmonics
+2
votes
1
answer
Which of the following short-circuits is most dangerous?
asked
Mar 13, 2019
in
Mathematics
by
kratos
distribution
transmission
+1
vote
1
answer
Earthing is necessary to give protection against
asked
Mar 9, 2019
in
Mathematics
by
kratos
distribution
transmission
+3
votes
1
answer
A single-phase line has an impedance of 5∠ 60° and supplies a load of 120 A, 3,300 V at 0.8 p.f. lagging.
asked
Mar 9, 2019
in
Mathematics
by
kratos
distribution
transmission
+1
vote
1
answer
A 50-Hz, 3-phase, 100-km long line delivers a load of 40 MVA at 110 kV and 0.7 p.f. lag.
asked
Mar 8, 2019
in
Mathematics
by
kratos
distribution
transmission
+3
votes
1
answer
The volume of copper required for an a.c. transmission line is inversely proportional to
asked
Mar 7, 2019
in
Mathematics
by
kratos
distribution
transmission
+3
votes
1
answer
An overhead transmission line at a river crossing is supported from two towers at heights of 50 m and 100 m above the water level,
asked
Feb 27, 2019
in
Mathematics
by
kratos
distribution
transmission
+1
vote
1
answer
Skin effect is proportional to (a) (conductor diameter)^4 (b) (conductor diameter)^3
asked
Feb 26, 2019
in
Mathematics
by
kratos
distribution
transmission
+2
votes
1
answer
Which of the following materials is used for overhead transmission lines?
asked
Feb 22, 2019
in
Mathematics
by
kratos
distribution
transmission
+1
vote
1
answer
By which of the following a bus-bar is rated? (a) Current only (b) Current and voltage
asked
Feb 21, 2019
in
Mathematics
by
kratos
distribution
transmission
+3
votes
1
answer
The limit of distance of transmission line may be increased by the use of
asked
Feb 20, 2019
in
Mathematics
by
kratos
distribution
transmission
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