: Use the information given below in the name plate of a 3 phase induction motor to calculate: Motor efficiency? (i) (ii) (iii) (iv) Slip at full load ? Starting current assuming Ts/Tr=1.5? If we use a star- delta starter, what value of motor starting current ? Туре MOT 112M No. 042657 Year. 1996 kW 4.0 kW Н.Р Hz 50 R.P.M 1440 Ph. 3 - Ins. Amb. Temp Cos e 0.82 n %. Duty S1 Protection. IP 53 415 V Y A 8.52 А is

: Use the information given below in the name plate of a 3 phase induction motor to calculate: Motor efficiency? (i) (ii) (iii) (iv) Slip at full load ? Starting current assuming Ts/Tr=1.5? If we use a star- delta starter, what value of motor starting current ? Туре MOT 112M No. 042657 Year. 1996 kW 4.0 kW Н.Р Hz 50 R.P.M 1440 Ph. 3 - Ins. Amb. Temp Cos e 0.82 n %. Duty S1 Protection. IP 53 415 V Y A 8.52 А is

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

A75 hp, 3-phase, 6-pole, 60 Hz induction motor delivers full load torque at 5% slip. If the load torque is increased by 15% as allowed by the service factor on the nameplate, determine the new speed and horsepower delivered
A 3-phase, 60 Hz, six pole, 220-volt wound rotor induction motor has a stator that is connected in Delta and the rotor that is connected in Wye. The rotor has haft as many turns as that stator. the RR is equal to 0.1- ohm and XBR is equal to 0.5-ohm (a) calculate also the starting torque developed by the motor (b) For over all operation of this induction motor, calculate the efficiency based on the gathered data.
A 25-horsepower, 230V, 60Hz, 3-phase induction motor has a Nameplate Rating of 58amperes. The nameplate also shows a temperature rise of 30°C. a) Determine the THHN Cable and TW grounding conductors.b) Conduit Size using EMTc) What is the overload size for this motor?d) Determine the locked rotor current if the motor is Code J.e) Determine the Dual-element, time-delay fuses to be used for the motor’s branch circuit.
A 3-phase, delta connected, 440 volt (line to line), 50 Hz, 6 pole induction motor has the following constants, in ohms per phase referred to the stator:R1 = 0.4, R2* = 0.2, I2’=54A and stator current is 60A, Friction, windage and stray load losses = 300 Watts. For a slip of 3.00%, Calculate the airgap power, mechanical power developed and output power when the motor is operated at rated voltage and frequency.
A 3-phase, delta connected, 440 volt (line to line), 50 Hz, 6 pole induction motor has the following constants, in ohms per phase referred to the stator:R1 = 0.4, R2* = 0.2, I2’=54A and stator current is 60A, Friction, windage and stray load losses = 300 Watts. For a slip of 3.00%, Calculate the airgap power, mechanical power developed and output power when the motor is operated at rated voltage and frequency. Course : Machines and Drives
The equivalent circuit parameters of a 230-V, 1-phase, 6-pole, 60-Hz induction motor are: R1 = R2’ =10ohm, X1 = X2’ = 10ohm, and Xm = 100ohm. At a slip of 5%, calculate the developed torque and The input power to the motor at 230V, while running on no-load, is 31.4 W at 1.2 A. What is the approximate efficiency of the motor at 5% slip?
1. What is the use of a synchronous motor in a power system network? Explain in detail with a diagram.(350words)
The nameplate of a squirrel-cage induction motor has the following information: 25hp, 220V, 3-phase, 60 cycles, 830rpm, 64A per line. If the motor takes 20,800W when operating at full-load, calculate the efficiency.
15 HP, 4 pole, 220 volts three phase star connected, 1725 rpm induction motor has the following parameters: R1 = 0.15 Ω, R2 = 0.18 Ω, X1 = 0.31 Ω and X2 = 0.31 Ω, friction and windage loss = 240 watts. Determine (i) Slip at maximum torque and maximum torque in synchronous torque (ii) slip at maximum power and maximum power (iii) starting torque and starting current. (Ans: (i) 0.282, 30700 Syn. Watts (ii) 0.204, 23400 w (iii) 17500 Syn. watts, 181 amps.)
A three phase, 4 pole, 3300 V, 50 Hz, star connected Induction motor, has identical primary and referred secondary impedance of value 3+j9 Ohm per phase. Using the approximate circuit, calculate: A. The full load torque at rated slip of 5%. B. The maximum torque at normal voltage and frequency.
A 50 HP, 440 volts, 3-phase induction motor delivers during starting period 150% of the normal torque and draws 550% of the rated current with the rated voltage. The full load pf and full load efficiency are 80% and 90% respectively. If the starting torque of the load is only 50% of the rated torque of the motor and an auto transformer is used as starting unit, what should be the starting current at this voltage?A. 125 ampB. 130 ampC. 180 ampD. 254 amp
Electrical Engineering Problem. Please help to provide correct solution for the problem. Please show neat solution Thanks. A 100kW, 230V, shunt generator has an armature resistance and field resistance of 0.05Ωand 57.5Ω. If the generator operates at rated voltage. SPL is 1.8kW,a) At what load does the generator achieve maximum efficiency?b) What is the value of this maximum efficiency?