Q: - An Elevator has the following readings as shown in Fig. 400 V, 50 Hz,4-Pole 1. Rotor current/phase at starting for case below: S1 S2 S3 $4 $5 51 51 2. Rotor current/phase at starting for case below: 60 V S1 S2 S3 $4 S5 IM Z2 - 0.6+j4 S2 S2 1 1 3. Full load current at slip 4 per cent. S5 S4 S3 4. Rotor power factor at full load. SR1 5. Rotor torque at full load.

Q: - An Elevator has the following readings as shown in Fig. 400 V, 50 Hz,4-Pole 1. Rotor current/phase at starting for case below: S1 S2 S3 $4 $5 51 51 2. Rotor current/phase at starting for case below: 60 V S1 S2 S3 $4 S5 IM Z2 - 0.6+j4 S2 S2 1 1 3. Full load current at slip 4 per cent. S5 S4 S3 4. Rotor power factor at full load. SR1 5. Rotor torque at full load.

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...

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Concept explainers

Distribution System

The final stage in the delivery of the electric power is the electric power distribution system. From the transmission system to the individual customers it carries electricity. The distribution system is connected with the transmission system and is used to lower the voltage of the transmission to medium voltage in the range of 2 kV to 35 kV with the help of transformers. This medium voltage to the distribution transformers located near the customer's premises is carried by the primary distribution system lines. These distribution transformers in turn lower the voltage to utilization voltage used in lightings, household appliances, industrial equipments etc. Through secondary distribution lines often several customers are supplied from one transformer. It is through service drops, the commercial and residential customers are connected to the secondary distribution system lines. Customers who demand a larger amount of power can be connected directly to the primary distribution system level or the sub-transmission level.

Question

Q:- An Elevator has the following readings as shown in Fig.
400 V, 50 Hz,4-Pole
1. Rotor current/phase at starting for case below :
Si
S2
S3
$4
S5
51
51
1
1
2. Rotor current/phase at starting for case below:
60 V
Si
S2
S3
S4
S5
I.M
Z2 0.6+j4
S2
1
3. Full load current at slip 4 per cent.
S5
S4
S3
4. Rotor power factor at full load.
R1
RI
5. Rotor torque at full load.

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