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Recent questions tagged polyphase circuits
+2
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Perform the following operation and the final result may be given in the polar form : (8 + j6) × (−10 − j 7.5)
asked
Mar 26, 2019
in
Mathematics
by
kratos
parallel ac circuits
polyphase circuits
three dimensional geometry
quarks
complex numbers
leptons
+1
vote
1
answer
A star-connected balanced load is supplied from a 3-phase balanced supply with a line voltage of 416 V
asked
Mar 17, 2019
in
Mathematics
by
kratos
polyphase circuits
+2
votes
1
answer
Three identical coils are connected in star to a 200-V, three-phase supply and each takes 500 W.
asked
Mar 16, 2019
in
Mathematics
by
kratos
polyphase circuits
+3
votes
1
answer
Three identical coils, each having a reactance of 20 Ω and resistance of 20 Ω are connected in (a) star (b)
asked
Mar 14, 2019
in
Mathematics
by
kratos
polyphase circuits
+3
votes
1
answer
A watt meter reads 5.54 kW when its current coil is connected in R phase and its voltage coil
asked
Feb 24, 2019
in
Mathematics
by
kratos
polyphase circuits
+2
votes
1
answer
In the case of an unbalanced star-connected load supplied from an unbalanced 3- φ , 3 wire system,
asked
Feb 19, 2019
in
Mathematics
by
kratos
symmetrical components
polyphase circuits
+2
votes
1
answer
A three phase induction Motor delivers an output of 15 h.p. at 83 % efficiency. The motor is d (delta) connected and is supplied by 440 V,
asked
Feb 15, 2019
in
Mathematics
by
kratos
parallel ac circuits
polyphase circuits
+3
votes
1
answer
Phase voltages of a star connected alternator are ER = 231 ∠ 0° V; EY = 231 ∠ –120° V ;
asked
Jan 18, 2019
in
Mathematics
by
kratos
polyphase circuits
+3
votes
1
answer
A 440-V, 3-phase, delta-connected induction motor has an output of 14.92 kW at a p.f. of 0.82 and efficiency 85%.
asked
Dec 28, 2018
in
Mathematics
by
kratos
parallel ac circuits
polyphase circuits
+1
vote
1
answer
The power input to a synchronous motor is measured by two watt meters both of which indicate 50 kW.
asked
Dec 6, 2018
in
Mathematics
by
kratos
polyphase circuits
+2
votes
1
answer
A star-connected balanced load is supplied from a 3− φ balanced supply with a line voltage of 416
asked
Dec 1, 2018
in
Mathematics
by
kratos
polyphase circuits
+3
votes
1
answer
A balanced star-connected load of (8 + j6) Ω per phase is connected to a balanced 3-phase 400-V supply.
asked
Nov 19, 2018
in
Mathematics
by
kratos
polyphase circuits
+1
vote
1
answer
Three non-inductive resistances, each of 100 ohms, are connected in star to a three-phase, 440-V supply.
asked
Nov 17, 2018
in
Mathematics
by
kratos
polyphase circuits
+3
votes
1
answer
Each phase of a 3-phase, Δ-connected load consists of an impedance Z = 20 ∠ 60° ohm.
asked
Nov 16, 2018
in
Mathematics
by
kratos
polyphase circuits
+1
vote
1
answer
Phase voltage and current of a star-connected inductive load is 150 V and 25 A.
asked
Oct 31, 2018
in
Mathematics
by
kratos
polyphase circuits
+1
vote
1
answer
Three equal star-connected inductors take 8 kW at a power factor 0.8 when connected across a 460 V,
asked
Oct 21, 2018
in
Mathematics
by
kratos
polyphase circuits
+1
vote
1
answer
A star connected load having R = 42.6 ohms/ph and XL = 32 ohms/ph is connected across 400 V,
asked
Oct 14, 2018
in
Mathematics
by
kratos
polyphase circuits
+3
votes
1
answer
A synchronous motor absorbing 50 kW is connected in parallel with a factory load of 200 kW
asked
Oct 1, 2018
in
Mathematics
by
kratos
polyphase circuits
+2
votes
1
answer
A 3-phase, 3-wire, 240 volt, CBA system supplies a delta-connected load in which ZAB = 25 ∠90,
asked
Sep 22, 2018
in
Mathematics
by
kratos
polyphase circuits
+2
votes
1
answer
If g(x)=1+(x)^(1/3) and f(g(x))=3−(x)^(1/3)+x, then find f(x)?
asked
Sep 22, 2018
in
JEE
by
kratos
applications of derivatives
polyphase circuits
cbse
class-11
jee
kvpy
jee mains
coordinatian compounds
class-12
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