1. which type of transformer connection is preferred in
case of power supply transformers?
(A) Star/Star
(B) Delta/Delta
(C) Star/Delta
(D) Zig Zag/Star
2. In a power transformer usuall which winding is closer to
the core?
(A) Primary winding
(B) Secondary winding
(C) Low Voltage winding
(D) High Voltage winding
3. The power factor of a purely inductive load is
(A) Zero
(B) Lagging
(C) Leading
(D) Unity.
- 9 Answers
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Answer / pkv
deta /star transformer is used in case of power supply
trnaformer
| Is This Answer Correct ? | 11 Yes | 3 No |
Answer / koti
1. Star / Star
2. Low Voltage Wdg
3. Zero (Cos 90=0)
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / nadhagopal
star to delta
lagging for pure inductive
leading for pure capcitive
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / guest
in power supply transformers star delta conn. is prefered
| Is This Answer Correct ? | 3 Yes | 5 No |
1. Star/Delta Type of transformer connection is preferred
in case of power supply transformers.
2. In a power transformer usually Low Voltage winding is
closer to the core
3.The power factor of a purely inductive load is Lagging
| Is This Answer Correct ? | 2 Yes | 4 No |
Answer / moloy dey
1. In case of supply transformer DELTA/STAR is used to
ensure 440[Ph to Ph] and 220 [Ph to N] both type of consumers.
2. (A) Primary winding stays close to the core.
3. The power factor of a purely inductive / capacitive load
is always (A) Zero, Hence, the power drawn by a
pure/loss-less inductor/capacitor is VxIx'0' = '0' [Zero]
| Is This Answer Correct ? | 1 Yes | 5 No |
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