A DC motor supplied from 12 V draws 1.25 amps and turns at 1200 RPM when...

Question

Question

engineering Electrical-Engineering

Answer 1

Answer #1

60 OWer Ciew Pout lin 1 5 ん= 83.78

Answer 2

Similar Homework Help Questions

Question 13 5 pts An electric motor delivers 67-HP mechanical power when its shaft turns at...

Question 13 5 pts An electric motor delivers 67-HP mechanical power when its shaft turns at 2,832 RPM. What is the shaft torque in N.m? 1 HP = 746 W. Question 14 5 pts Copy of A DC motor supplied from 48 V draws 5 amps and turns at 157 rad/sec when the load torque is 1.45 N.m. What is the efficiency in percent?
A 250 V, 10 KW, 1200 rpm dc shunt motor has a full load efficiency of...

A 250 V, 10 KW, 1200 rpm dc shunt motor has a full load efficiency of 80 percent. Its field and armature resistances are 110 ohms and .25 ohm respectively. Calculate the value of the resistance to be inserted in series with the armature and the power lost in the armature circuit to reduce the speed to 80 percent when the load torque is constant regardless of the speed.
A permanent magnet DC motor is supplied from a 12 V source and turns at 500...

A permanent magnet DC motor is supplied from a 12 V source and turns at 500 RPM (steady-state) experimentally determined as 0.1 Nms2 and the frictions are negligible. The electrical parameters of the rotor winding are measured 0.82, and 5mH. Obtain the transfer function of the motor by considering the armature voltage as input and shaft speed in rad/s as output. with an armature current of 1A. The moment of inertia is

A DC motor, when supplied from a 211 V power supply is observed to rotate under...

A DC motor, when supplied from a 211 V power supply is observed to rotate under no-load conditions at 1,700 rpm. A stall test shows that the winding resistance is 1.65 ? The motor is connected to a load whose torque-speed characteristic is given by ? = ?×0.178. Find the speed (in rpm) at which the motor will drive this load. rpm (Give your answer in rpm to 3 s.f.)
A DC permanent magnet motor draws 5A from a 200V DC source, under no-load conditions, and...

A DC permanent magnet motor draws 5A from a 200V DC source, under no-load conditions, and draws 50A from the same source, and has a speed of 2500rpm at full load. Ra = 1.4Ω. Determine: a) the rotation loss* (W) b) the no-load speed (rpm) c) the output torque (Nm) d) the efficiency of the motor at full load. (*Assume the rotational loss is proportional to speed!)
Q1 [35] DC shunt motor has the following parameters: 10,1 kW, 150 V, 805 rpm, R=0.212,...

Q1 [35] DC shunt motor has the following parameters: 10,1 kW, 150 V, 805 rpm, R=0.212, R=200 2. When the motor is not loaded it draws 10 A from the voltage source of 150 V. a) [10]Calculate the efficiency at full load, rotating at 805 rpm. b) [10] Calculate the torque when there is no load on the rotor. c) [15] If total torque on the rotor is 91 Nm, calculate the control resistance of the armature to set the...

A 6 hp, 180 V shunt dc motor draws a full-load current of 30 A from the power supply. The motor h...

A 6 hp, 180 V shunt dc motor draws a full-load current of 30 A from the power supply. The motor has a field (shunt) resistance of 150 Ω. The armature resistance of the motor is 0.1 Ω. When the motor speed is 1800 rpm (this is not the full-load speed), the relationship between the induced voltage
A 250-V shunt-connected DC motor runs at 1500 rpm when it is not connected to any...

A 250-V shunt-connected DC motor runs at 1500 rpm when it is not connected to any external load. When the motor is connected to an external load, it draws a line current of 40A. The motor has an armature resistance of 1 ? and a field circuit resistance of 100 ?. Assume that the rotational loss torque is 2 Nm and is independent of the speed (a) Find the line current of the motor when there is no external load....
A DC permanent magnet motor draws 5A from a 200V DC source, under no-load conditions, and draws 50A from the same source, and has a speed of 2500rpm at full load. Ra = 1.4Ω. Determine: a) the rotation...

A DC permanent magnet motor draws 5A from a 200V DC source, under no-load conditions, and draws 50A from the same source, and has a speed of 2500rpm at full load. Ra = 1.4Ω. Determine: a) the rotation loss* (W) b) the no-load speed (rpm) c) the output torque (Nm) d) the efficiency of the motor at full load. (*Assume the rotational loss is proportional to speed!)

FQ3 3. A 240 V DC series motor with 0.1 ohm armature resistance and 0.1 ohm...

FQ3 3. A 240 V DC series motor with 0.1 ohm armature resistance and 0.1 ohm field resistance runs at 1200 rpm and 100 Amp. of full load speed and armature current respectively. The motor has a brush contact drop of 2 volts. Find the motor full load torque and efficiency If the motor is to drive a pump that requires a torque of 150 NM, find the speed as the motor drives the given pump. a. b.