Q2 For the above What is meant by VF control 2 A 500V series motor having

# Q2 for the above what is meant by vf control 2 a 500v

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Q2. For the above What is meant by V/F control? 2. A 500V series motor having armature resistance and field resistance of 0.2 ohm and 0.3 ohm respectively runs at 500 rpm when taking 70A. Assuming unsaturated field, find out its speed when field diverter of 0.684 ohm is used constant load torque.
5.00 4.00 5.00 5.00 4.00 5.00 4.00 4.00 5.00 4.00 5.00 5.00 5.00 5.00 5.00 1.00 5.00 4.00 4.00 4.00 4.00 2.00 5.00 5.00 5.00 4.00 4.00 4.00 2.50 5.00 5.00 5.00 2.50 4.00 5.00 4.00 5.00 5.00 5.00 5.00 4.00 4.00 4.00 1.00 5.00 5.00 5.00 4.00 5.00 4.00 4.00 4.00 2.50 4.00 5.00 5.00 4.00 1.00 5.00 4.00 5.00 4.00 5.00 5.00 2.50 5.00 5.00 1.00 5.00 4.00 4.00 4.00 5.00 5.00 5.00 5.00 2.50 1.00 5.00 4.00 5.00 4.00 4.00 4.00 5.00 5.00 5.00 5.00 2.50 4.00 4.00 1.00 5.00 5.00 5.00 4.00 5.00 4.00 4.00 5.00 2.50 4.00 5.00 4.00 5.00 5.00 4.00 4.00 4.00 4.00 5.00 5.00 2.50 5.00 5.00 4.00 5.00 1.00 5.00 5.00 4.00 4.00 5.00 1.00 5.00 5.00 4.00 4.00 5.00 4.00 5.00 5.00 2.50 5.00 5.00 4.00 5.00 4.00 4.00 5.00 4.00 5.00 5.00 4.00 5.00 4.00 2.50 5.00 5.00 5.00 4.00 1.00 5.00 1.00 5.00 4.00 4.00 4.00 5.00 5.00 5.00 5.00 2.50 4.00 5.00 4.00 5.00 4.00 4.00 4.00 4.00 5.00 5.00 4.50 5.00 4.50 4.00 5.00 2.50 4.00
5.00 5.00 5.00 5.00 5.00 4.00 4.00 5.00 5.00 5.00 2.50 4.00 5.00 5.00 4.00 4.00 4.00 4.00 5.00 4.00 5.00 5.00 5.00 5.00 4.00 2.00 5.00 4.00 5.00 5.00 5.00 4.00 4.00 5.00 2.50 3.00 5.00 4.00 5.00 5.00 5.00 4.00 5.00 5.00 4.00 5.00 4.00 4.00 0.00 0.00 0.00 0.00 4.00 4.00 5.00 4.00 5.00 5.00 5.00 4.00 5.00 5.00 5.00 5.00 5.00 3.00 2.50 5.00 4.00 4.00 5.00 4.00 4.00 3.00 4.00 3.00 2.50 5.00 4.00 4.00 3.50 5.00 5.00 5.00 5.00 2.00 4.00 3.00 5.00 3.00 2.50 2.00 4.00 4.00 4.00 4.00 2.50 5.00 2.50 5.00 3.50 3.00 4.00 2.00 4.00 4.00 4.00 4.00 5.00 2.50 5.00 5.00 5.00 4.00 5.00 4.00 4.00 5.00 2.50 5.00 4.00 4.00 4.00 4.00 3.50 2.50 5.00 5.00 3.00 4.00 5.00 5.00 5.00 4.00 2.00 4.00 4.00 3.00 5.00 5.00 2.50 5.00 4.00 2.50 5.00 2.00 2.50 2.00 4.00 5.00 5.00 4.00 5.00 5.00 4.00 5.00 3.50 4.00 5.00 2.50 5.00 5.00 4.00 5.00 3.50 3.00 3.50 3.00
84 85 85 84 86.60 87.63 87.63 86.60 3 3 3 3 3 3 PO8 PO9 PO10 PO11 2 2 3 2 2.39 2.39 2.98 2.39 2 2 3 2
Assignment-2 5.00 B 5.00 C 5.00 A 5.00 C 4.00 O 5.00 D 5.00 D 4.00 A 5.00 E 5.00 E 5.00 E ient control tion, sizing, eed drives. University attainment A 2.8 kW, 400V, 50Hz , 4 pole , 1370 rpm, delta connected squirrel cage induction motor has following parameters referred to the stator : Rs = 2Ω, R’r = 5Ω, Xs =Xr = 5Ω, Xm = 80Ω. Motor speed is controlled by stator voltage control. When driving a fan load it runs at rated speed at rated voltage. Calculate (i) motor terminal voltage, current and torque at 1200 rpm and (ii) motor speed , current and torque for the terminal voltage of 300V. Based on University Question paper
5.00 O 5.00 D 5.00 C 4.00 A 5.00 B 5.00 C 4.00 D 5.00 E 5.00 E 5.00 D 5.00 A 4.00 B 5.00 C 5.00 C 4.00 D 5.00 E 5.00 C 4.00 B 5.00 A 5.00 D 5.00 D 5.00 C 5.00 C 4.00 D 5.00 C 5.00 O 5.00 C 5.00 B 2.50 O 5.00 O 5.00 A 4.00 B 2.50 C 5.00 O 5.00 O 4.00 O 5.00 C 2.50 C 4.00 O 5.00 C 4.00 D 4.00 O 5.00 O 5.00 D 5.00 D
2.50 B 4.00 D 5.00 D 5.00 O 4.00 D 5.00 C 4.00 C 2.50 C 5.00 B 5.00 C 4.00 D 5.00 B 0.00 C 4.00 O 5.00 D 4.00 O 4.00 B 5.00 C 5.00 D 2.50 C 5.00 D 5.00 D 4.00 O 5.00 D 4.00 O 2.50 O 4.00 A 4.00 O 5.00 O 2.50 C 4.00 B 5.00 C 4.00 C 5.00 B 4.00 C 2.50 O 5.00 E 5.00 A 4.00 B 5.00 B 5.00 B 3.50 C
87 76 89.69 78.35 3 3 PO12 2 2.39 2
Renew Name of the faculty: Debswarup Rath Regn No Name Internal Test-1 Assignment-1 1 1401326079 AISHWARYA ROUT 4.00 4.50 5.00 2 1401326080 AJOY KUMAR MITRA 4.00 4.00 4.00 3 1401326081 AMBRAJIT PARDIA 2.00 5.00 5.00 4 1401326082 ASIS KUMAR DASH 4.00 4.00 4.00 Sl No EDCO1: Study the different braking operations of dc motor and learn different speed control methods and Its application. EDCO2: Study theapplication motors in indu Internal Test- 1 a) Why a motor of smaller rating can be selected for a short time delay? b)what are the braking methods employed in dc separately excited motor? 4. The temperature rise of a motor when operating for 25min on full load is 250C and becomes 400C when the motor operates for another 25min on the same load. Determine the heating time constant and the steady state temperature rise. Derive the Speed, Torque Equations of a fully controlled converter connected to separately excited D.C motor with continuous current operation with necessary waveforms

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• Fall '18
• dsrs
• Electric motor