Engineering Board Exam Reviewer · Three-Phase Systems in Power Applications · medium

Three 10, resistors are connected in delta across a 240 V three-phase line. What is the line current?

  1. 24 A
  2. 13.9 A
  3. 72 A
  4. 41.6 A

Answer

D. 41.6 A

Solution

Iph=VL/R=240/10=24 A. IL= 3,Iph=41.6 A.

More Three-Phase Systems in Power Applications questions

  1. A balanced three-phase load of 100 kW operates at 0.8 power factor lagging. How many kvar of capacitors are needed to raise the power…
  2. In the two-wattmeter method on a balanced three-phase load, the wattmeters read 5 kW and 3 kW. What is the load power factor?
  3. The 30 kW, 0.8 power factor lagging three-phase load above is supplied from a 480 V line. Find its total reactive power.
  4. A balanced three-phase load takes 30 kW at 0.8 power factor lagging from a 480 V line. Find the line current.
  5. A balanced delta-connected load, with Z=6+j8, in each phase, is supplied from a three-phase line of 400 V (line-to-line, rms). Find the…
  6. A balanced delta-connected load, with Z=24+j18, in each phase, is supplied from a three-phase line of 208 V (line-to-line, rms). Find the…
  7. A balanced delta-connected load, with Z=12+j9, in each phase, is supplied from a three-phase line of 208 V (line-to-line, rms). Find the…
  8. A balanced wye-connected load, with Z=15+j20, in each phase, is supplied from a three-phase line of 480 V (line-to-line, rms). Find the…
  9. A balanced wye-connected load, with Z=16+j12, in each phase, is supplied from a three-phase line of 400 V (line-to-line, rms). Find the…
  10. A balanced wye-connected load, with Z=15+j20, in each phase, is supplied from a three-phase line of 208 V (line-to-line, rms). Find the…

All Three-Phase Systems in Power Applications questions