20 V, 10 A, 10 rpm separately excited dc motor with armature resistanc – McqOptions

MCQOPTIONS

1.	20 V, 10 A, 10 rpm separately excited dc motor with armature resistance (R_a) equal to .8 ohms. Calculate back emf developed in the motor when it operates on the full load. (Assume rotational losses are neglected)
A.	12 V
B.	14 V
C.	13 V
D.	11 V
Answer» B. 14 V

Discussion

No Comment Found

Related MCQs

Calculate the quality factor for the R-C circuit if R=1 and C=1 F.
Calculate the equivalent resistance when two armature resistances are connected in parallel of values 6 , 3 .
Calculate the quality factor for the R-L circuit if R=16 and X<sub>L</sub>=8 with supply frequency is 1 rad/sec.
Calculate the value of the angular acceleration of the DC shunt motor using the given data: J = 1 kg-m<sup>2</sup>, load torque = 1 N-m, motor torque = 2 N-m.
20 V, 10 A, 10 rpm separately excited dc motor with armature resistance (R<sub>a</sub>) equal to .8 ohms. Calculate back emf developed in the motor when it operates on the full load. (Assume rotational losses are neglected)
The maximum current in the inductor I<sub>L</sub>(t)=I<sub>o</sub>(1 e<sup>-t/ </sup>) is __________
Calculate the value of the coefficient of coupling for the tightly coupled coils.
The maximum V<sub>o</sub>ltage across the capacitor V<sub>c</sub>(t)=V<sub>o</sub>(1- e<sup>-t</sup>) is __________
Calculate the steady state value for x(t)=7e<sup>-9t</sup>.
Calculate the resonant frequency if the values of the capacitor and inductor are 2 F and 2 H.