The power delivered to the load in maximum when the SCR firing angle is?

The power delivered to the load in maximum when the SCR firing angle is

(a) Zero

(b) 90

(c ) 180

(d) Between 90 and 180

3 Answers

Relevance
  • 10 years ago
    Favorite Answer

    Zero.

    If the SCR fires immediately (at zero time, at the beginning of each cycle), then it is 'on' for a full 1/2 cycle (or a full cycle for a TRIAC). A full 1/2 cycle is the most time the SCR can be 'on' , so max. power is delivered.

    .

  • 10 years ago

    The power delivered to the load is maximum when the SCR firing angle is at 90° ( or 270° ) .

    Voltage and current are near maximum values at that moment in time.

    Maximum deliverable energy occurs immediately following the zero crossing at 0° and 180°.

  • caison
    Lv 4
    3 years ago

    it will strengthen the final capability. by utilising reducing the firing attitude to 0 you're triggering the SCR previous to in case you waited for the ninety degree ingredient. 0 is on the commencing up of the sine wave the place the 0 pass ingredient is. ninety ranges is on the peak of the 1st a million/2 of the cycle. in case you positioned off at ninety ranges you basically have the relax a million/2 of the cycle (from ninety to a hundred and eighty ranges) for conduction. Triggering at 0 ranges the finished a million/2 of the cycle (0 to a hundred and eighty ranges) is carrying out.

Still have questions? Get your answers by asking now.