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Diffstat (limited to '1445/CH3/EX3.6')
-rw-r--r-- | 1445/CH3/EX3.6/Ex3_6.sce | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/1445/CH3/EX3.6/Ex3_6.sce b/1445/CH3/EX3.6/Ex3_6.sce new file mode 100644 index 000000000..52cdce49a --- /dev/null +++ b/1445/CH3/EX3.6/Ex3_6.sce @@ -0,0 +1,34 @@ +//CHAPTER 3- THREE-PHASE A.C. CIRCUITS +//Example 6 + +disp("CHAPTER 3"); +disp("EXAMPLE 6"); + +//VARIABLE INITIALIZATION +v_l=3300; //line voltage in Volts +p_out=1500*735.5; //output power in Watts (1 metric horsepower= 735.498W) +eff=0.85; +pow_fact=0.81; + +//SOLUTION + +//solution (a) +p_in=p_out/eff; +disp(sprintf("(a) The motor input is %.2f kW",p_in/1000)); + +//solution (b) +I=p_in/(sqrt(3)*v_l*pow_fact);//phase current = line current for star connection +disp(sprintf("(b) The line and phase current of the alternator is %.2f A",I)); + +//solution (c) +I_l=I; +I_ph=I_l/sqrt(3); //phase current = (line current)/sqrt(3) for delta connection +disp(sprintf("(c) The line current of the motor is %.2f A",I_l)); +disp(sprintf("The phase current of the motor is %.2f A",I_ph)); + +//Answers may be different due to precision of floating point numbers + +//END + + + |