Long Transmission Line MCQ Quiz in தமிழ் - Objective Question with Answer for Long Transmission Line - இலவச PDF ஐப் பதிவிறக்கவும்

Last updated on Mar 20, 2025

பெறு Long Transmission Line பதில்கள் மற்றும் விரிவான தீர்வுகளுடன் கூடிய பல தேர்வு கேள்விகள் (MCQ வினாடிவினா). இவற்றை இலவசமாகப் பதிவிறக்கவும் Long Transmission Line MCQ வினாடி வினா Pdf மற்றும் வங்கி, SSC, ரயில்வே, UPSC, மாநில PSC போன்ற உங்களின் வரவிருக்கும் தேர்வுகளுக்குத் தயாராகுங்கள்.

Latest Long Transmission Line MCQ Objective Questions

Top Long Transmission Line MCQ Objective Questions

Long Transmission Line Question 1:

Two overhead Lines ‘P’ and ‘Q’ are connected in parallel to supply a load of 10 MW at 0.8 pf lagging at 30 kV. The resistance and reactance of line ‘P’ are 3 Ω and 4 Ω, respectively and of the Line ‘Q’ are 4 Ω and 3 Ω respectively. The power supplied by the ‘P’ is

  1. 6.30 MW
  2. 4.46 MW
  3. 6.73 MW
  4. 5.88 MW

Answer (Detailed Solution Below)

Option 2 : 4.46 MW

Long Transmission Line Question 1 Detailed Solution

Impedance of Line P, ZP = 3 + j4 = 5∠53.13° Ω   

Impedance of Line Q, ZQ = 4 + j3 = 5∠36.86° Ω   

\({Z_P} + {Z_Q} = 7 + j7 = 7\sqrt 2 \angle 45^\circ {\rm{\Omega }}\)

Gate EE Power System Full test Images-Q7

Total load supplied in kVA

\(S^*= \frac{{10000}}{{0.8}}\angle - 36.86^\circ = 12500\angle - 36.86^\circ\)

Load supplied by Line P

\(\begin{array}{l} {S_P} = S^*\frac{{{Z_Q}}}{{{Z_P} + {Z_Q}}}\\ = 12500\angle - 36.86^\circ \times \frac{{5\angle 36.86^\circ }}{{7\sqrt 2 \angle 45^\circ }}\\ = \frac{{12500 \times 5}}{{7\sqrt 2 }}\angle - 45^\circ \end{array}\)

= 6313.45 kVA at pf 0.708

Power supplied by Line P,

P = 6313.45 × 0.707 = 4.46 MW

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