SSC JE Electrical / Mock Test Series : 2
Topic : Mixed Technical (Electrical Engg.) No. of Question : 100 Type : MCQ Time : 60 Minutes
SSC JE Electrical / Mock Test Series : 1
Topic : Mixed Technical (Electrical Engg.) No. of Question : 100 Type : MCQ Time : 60 Minutes
Relays for Protection against 50 MVA 132/33 kV Transformer
Sl. No. Type of Relay Relay Name Appearance ANSI Code Purpose 1. Numerical Relay Trafo. Differential Protection Relay 87 For protection against phase-to-phase fault and phase to earth faults 2. Numerical Relay Over Current & Earth Fault Protn. Relay 51 For protection of transformers from over current and earth faults 3. Circulating Current E/F Diffn. …
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Voltage Class
Voltage Class Maximum voltage under normal condition Tolerance Low Voltage (LV) 250 V +- 6% Medium Voltage (MV) 650 V +- 6% High Voltage (HV) 33 KV -9% to +6% Extra High Voltage (EHV) >33 KV 12.5% to 10%
Use CRO to observe the output waveform of half wave-controlled rectifier with resistive load and determine the load voltage
Experiment No.: 8 Experiment Name: Observe the output waveform of half wave-controlled rectifier with resistive load using CRO and determine the load voltage. Objective: To observe the output waveform of half wave-controlled rectifier with resistive load using CRO. Determine the load voltage. Theory: A semi converter uses two diodes and two thyristor and there is …
Testing the Proper Functioning of Power Electronic Switches – SCR, IGBT, SCS and TRIAC
Experiment No.: 7 Experiment Name: Testing the proper functioning of power electronic switches – SCR, IGBT, SCS and TRIAC Objective: To test SCR, IGBT, SCS and TRIAC. Theory: SCR: Silicon Controlled Rectifier (SCR) is a unidirectional semiconductor device made of silicon. This device is the solid state equivalent of thyratron and hence it is also …
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Study of VCB and Identification of Different Parts
Experiment No.: 8 Experiment Name: Study of Vacuum Circuit Breaker (VCB) and identify different parts. Objective: To study VCB To identify different parts of VCB Theory: A vacuum circuit breaker is such kind of circuit breaker where the arc quenching takes place in vacuum. The technology is suitable for mainly medium voltage application. For higher …
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Study of Different Lightning Arrester and Identification of Different Parts
Experiment No.: 7 Experiment Name: Study of different lightning arrester and identify different parts. Objective: To study of different lightning arrester To identify different parts of it Theory: A lightning arrester is a device used on electric power transmission and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning. The typical lightning arrester has a high-voltage terminal and a ground terminal. …
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