Question

For the same supply voltage, the power
consumed in three phase delta connected
load is ----- times the power consumed in
star connected load​

Answer 1

In a delta connected ( Dd ) group of transformers, the line voltage, VL is equal to the supply voltage, VL = VS. But the current in each phase winding is given as: 1/√3 × IL of the line current, where IL is the line current.

Answer 2

Answer:

⇒the power consumed in three phase delta connected load is 3 times the power consumed in star conected load.

⇒ I will attach the figuers of each delta connection and star connection below check it out!

Explanation:

• The resistance of both the delta and star is same.
• Now let,   $V_{L,D} = V_{L,Y} = V_{L}$

where ,

$V_{L,D} =$  voltage of load in delta connection.

$V_{L,Y} =$ voltage of load in star connection.

(i) In Δ- connection:

• $V_{L} =$ $V_{P,D}$
• $P$Δ =$3$ × $V_{P,D}$ × $I_{P,D}$

• $P$Δ = $3$ × $10$ × $10$         { check the figure below you can get idea of, }

                                          {    these values $V_{P,D} =10$  & $I_{P,D} = 10$   }          

           ∴ $P$Δ = 3oow ⇒  eq no:1

(ii) In star connect

• $V_{L} = V_{L,Y}$
• $P$Υ$= 3$ × $V_{P,Y} I_{P,Y}$

 { check the figure below you can get  idea of  these values}

• $P$Υ$=$ ${3}$ × $10/\sqrt{3}$ × $10/\sqrt{3}$
• $P$Υ= 100w ⇒ eq no:2

from both eq no 1&2 we can say that,

    $P$Δ$= 3P$Υ.

∴ power consumed in three phase delta connected load is 3 times the power consumed in star conected load.