ASSIGNMENT Draw a circuit diagram for the DC Motor used in this experiment.. (1) What are the losses in a motor? Which of the losses are constant and which are variable

(2) Calculate the following from the data in Table 1 and 3: (a) Total Current at No-Load (b) IA + (Amps) VIL (watts) 2 (c) Armature & Copper Loss = IARA (watts) (d) Shunt Field Copper Loss-R(watts at No-Load (e) Stray power loss at No-Load - Total Power Input at No-Load at No-Load PSP VIL (IA² RA+ 42 R) (watts) (3) Now, assume that the motor is loaded to give an armature current of 3A. Calculate the following from data calculated in Assignment (2): (a) Total current ILIA + 4 Amps (b) Total power input Pin VIL watts (c) Torque T-F.r oz.-in. Where (e) Armature copper loss PA-IARA Watts (d) Shunt field copper loss P1-42 watts (e) Strey power loss PSP as computed at no-load in Assignment (2). (1) Total power losses PT PSP + PA+ P₁. Watts (g) Total power output Pout (4) Calculete the following from data in Table 2: (e) Totel current IL-1A + 4 Amp. Pin PT Watts (h) Percent efficiency E-Pout x 100 Pin F-load in oz. given by the spring balance scale r-radius in inches of the (b) Total power input Pin VIL watts (d) Total power output Pout" -2XNT 6,350,000 x 746 wat torque arm, i.e., distance from centre of motor shaft to the spring balance. (e) Total power losses PT Pin Pout Watts (1) Percent efficiency Elf Pout x 100 Pin (5) Compare (e) the total power losses and (b) the efficiency between those obtained in Assignment 3 and 4. Comment. (6) What are the advantages and disadvantages of this method for determination of losses and efficiency of a Shunt Motor? (7) Can this method be extended to a Compound Motor and a Series Motor? Why?