SSC JE Electrical study guide
SSC JE Electrical · Work through your exam, one topic at a time.
The Junior Engineer (Civil, Mechanical & Electrical) Examination is conducted by the Staff Selection Commission (SSC), India's central recruitment body. As the commission's own site describes it, "This competitive exam is held to recruit junior engineers in various government departments and organizations." Candidates choose one engineering branch - Civil, Mechanical or Electrical - and compete within that branch for junior engineer posts across participating departments and organisations. The published Paper-I is a Computer Based Examination, i.e. objective multiple-choice questions answered at a test centre. Topics on this exam: Civil Engineering, Mechanical Engineering, and Electrical Engineering. The SSC JE Electrical study guide has 3 sections and about 1,035 words.
01Civil Engineering
Civil Engineering in SSC JE tests materials, surveying, estimating, soil and fluid mechanics, and structural behaviour at junior-engineer depth. Questions reward direct formula recall and unit discipline rather than long derivations. Concrete nominal mixes are volume-based: M20 = 1:1.5:3, M15 = 1:2:4, M10 = 1:3:6. Design mixes are strength-based and need trial mixes.
313 words, about 2 min02Mechanical Engineering
Mechanical Engineering in SSC JE covers thermodynamics, IC engines, strength of materials, fluid mechanics, manufacturing, and power plants. The paper favours definitions, cycle efficiencies, and direct formula application. Absolute pressure = gauge pressure + atmospheric pressure; use kelvin for all gas-law and cycle calculations. For a heat engine, thermal efficiency η = W net / Q in = 1 − Q out/Q in.
321 words, about 2 min03Electrical Engineering
Electrical Engineering in SSC JE tests basic circuit laws, DC and AC machines, transformers, power systems, measurements, and basic electronics. Numerical questions are usually short but sensitive to RMS and phase conventions. For a DC shunt motor, back emf E b = V − I a R a; armature current depends on load torque, not on supply voltage alone. In a balanced three-phase system, P = √3 V L I L cos φ.
401 words, about 2 min