Numerical - Calculate rotational losses and efficiency of motor at full load

Q.  A 240 V, 17 kW d.c. shunt motor draws an armature current of 80 A at full load. The armature and shunt field resistances are 0.2 ohm and 195 ohm respectively. The rotational losses and efficiency of motor at full load is

- Published on 19 Oct 15

a. 87.20 %
b. 89.32 %
c. 89.67 %
d. 90.03 %

ANSWER: 87.20 %

Related Content

➨ Post your comment / Share knowledge


Enter the code shown above:

(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)
▲