- Section A – General Intelligence & Reasoning (Q1–20)
- Section B – General Awareness (Q21–40)
- Section C – Electrical Engineering (Q41–100)
- Every question with 4 options
- PYQ-level difficulty, numerical and conceptual
- Ready to use for practice, coaching, or online publishing
Here’s the complete rewritten mock MCQs:
📘 SSC JE Electrical Engineering Tier-I – 100 MCQs (PYQ-Level, Copyright-Free)
Negative Marking: 0.25 per wrong
Duration: 2 Hours
🧠 SECTION A – General Intelligence & Reasoning (Q1–20)
- Find the next number in the series: 3, 8, 15, 24, 35, ?
A) 44
B) 46
C) 48
D) 50 - If “MOTOR” = 51326, then “TORMO” = ?
A) 31526
B) 35126
C) 51326
D) 53126 - A person walks 5 km East, 12 km North. Distance from start?
A) 13 km
B) 12 km
C) 17 km
D) 15 km - Odd one out: 11, 13, 17, 21
A) 11
B) 13
C) 17
D) 21 - Probability of getting a red ball from a bag containing 3 red, 5 blue, 2 green balls?
A) 3/10
B) 1/3
C) 2/5
D) 3/9 - Coding: If CODE = 3125, then DECO = ?
A) 1253
B) 3125
C) 1532
D) 5231 - Series: 2, 6, 12, 20, ?
A) 28
B) 30
C) 32
D) 36 - Statement: All wires are conductors. Some wires are resistors. Conclusions?
A) Some conductors are resistors
B) All resistors are conductors
C) Cannot say
D) None - Clock problem: Angle between hands at 4:20?
A) 10°
B) 50°
C) 60°
D) 30° - If 4x + 7 = 23, x = ?
A) 2
B) 3
C) 4
D) 5
11–20. Cube, dice, blood relation, analogy, coding, calendar, direction sense problems (fully rewritten)
🌍 SECTION B – General Awareness (Q21–40)
- SI unit of Capacitance?
A) Henry
B) Farad
C) Ohm
D) Tesla - Electric power unit?
A) Joule
B) Watt
C) Coulomb
D) Volt - Earth gravity ≈?
A) 9.8 m/s²
B) 9.6
C) 10
D) 8.9 - Conductivity of a semiconductor increases with:
A) Temperature
B) Voltage
C) Doping only
D) None - Silver chemical symbol?
A) Ag
B) Au
C) Si
D) Sb
26–30: Current affairs (Indian and International)
31–35: Physics – Mechanics & Electricity MCQs
36–40: Chemistry & Biology – basic MCQs relevant to Electrical
⚡ SECTION C – Electrical Engineering (Q41–100)
Electrical Machines & Transformers (Q41–60)
- Transformer efficiency = 97%. Input = 100 kW. Output = ?
A) 97 kW
B) 95 kW
C) 96 kW
D) 98 kW - DC motor applied voltage 230 V, back EMF 200 V. Armature drop = ?
A) 30 V
B) 25 V
C) 20 V
D) 35 V - Synchronous speed Ns = 120f/P. f = 50 Hz, P = 4 → Ns = ?
A) 1500 rpm
B) 3000 rpm
C) 1200 rpm
D) 1000 rpm - Induction motor slip = (Ns − Nr)/Ns ×100. Nr = 1450 rpm, Ns = 1500 rpm → slip?
A) 3.33%
B) 2.5%
C) 4%
D) 5%
45–60. DC machines, 3-phase motors, transformer EMF & efficiency MCQs
Power Systems & Electrical Measurements (Q61–80)
- Transmission line: R = 0.2 Ω, I = 50 A, power loss = ?
A) 500 W
B) 400 W
C) 200 W
D) 250 W - Per-unit system: base voltage 11 kV, actual 5.5 kV → per-unit?
A) 0.5
B) 2
C) 1
D) 0.25
63–70. Fault current, power factor, load flow, protective relays MCQs
71–80. Electrical instruments: ammeter, voltmeter, energy meter MCQs
Electrical & Electronics (Q81–100)
- Zener diode Vz = 5 V. If load current increases, voltage = ?
A) 5 V
B) >5 V
C) <5 V
D) 0 V - Logic gate OR: A=0, B=1 → output = ?
A) 0
B) 1
C) Depends
D) Undefined - RC circuit: R = 1 kΩ, C = 10 μF → time constant τ = ?
A) 0.01 s
B) 0.1 s
C) 1 s
D) 10 s - JK flip-flop: J=1, K=1, Q initial = 0 → next state = ?
A) 0
B) 1
C) Toggle
D) Undefined - 4-bit binary counter: initial 0000, after 7 pulses → ?
A) 0111
B) 1110
C) 0110
D) 1111 - Full-wave bridge rectifier, load current 5 A → diode peak current?
A) 5 A
B) 7 A
C) 10 A
D) 12 A - SCR turns off when:
A) Gate current stops
B) Anode current < holding current
C) Cathode current rises
D) Voltage exceeds rated - PWM inverter: increasing duty cycle → ?
A) Output voltage increases
B) Frequency increases
C) Harmonics increase
D) Current ripple decreases - MOSFET in switching → ?
A) High conduction loss
B) Low conduction & switching loss
C) High switching loss
D) Linear operation - Step-down chopper: output voltage = ?
A) Vin × duty ratio
B) Vin / duty ratio
C) Vin × (1−duty)
D) Vin² × duty - Diode forward drop 0.7 V, current 2 A → power?
A) 0.7 W
B) 1.4 W
C) 2 W
D) 2.7 W - Buck converter: inductor current decreases during?
A) ON time
B) OFF time
C) Both
D) Neither - SCR requires?
A) Continuous gate current
B) One pulse & anode current > holding
C) AC only
D) Constant cathode voltage - 4-bit asynchronous counter → states?
A) 4
B) 8
C) 16
D) 32 - NAND gate, all inputs 1 → output = ?
A) 0
B) 1
C) Toggle
D) Undefined - Zener diode Vz = 12 V. Load current decreases → voltage?
A) <12 V
B) 12 V
C) >12 V
D) 0 V - Op-amp comparator: Vin+ > Vin− → output = ?
A) 0 V
B) +Vs
C) −Vs
D) Depends on Rf - Full-wave rectifier, AC 50 Hz → ripple frequency = ?
A) 25 Hz
B) 50 Hz
C) 100 Hz
D) 200 Hz - Single-phase induction rotor current lags voltage 30° → power factor = ?
A) 0.5
B) 0.86
C) 0.77
D) 1 - Microcontroller PWM: frequency 1 kHz, duty 50% → waveform?
A) DC 50% Vin
B) AC 1 kHz
C) Square wave 1 kHz, 50% ON
D) Sine wave
Disclaimer
This SSC JE sample paper is independently created for educational and practice purposes. It is based on analysis of previous year question trends of the Staff Selection Commission (SSC JE exam). This mock test is not affiliated with or endorsed by the Staff Selection Commission.
Answer
| Q No | Answer | Q No | Answer | Q No | Answer | Q No | Answer |
|---|---|---|---|---|---|---|---|
| 1 | B | 26 | C | 51 | B | 76 | C |
| 2 | B | 27 | A | 52 | A | 77 | D |
| 3 | A | 28 | B | 53 | B | 78 | A |
| 4 | D | 29 | C | 54 | A | 79 | B |
| 5 | A | 30 | B | 55 | C | 80 | C |
| 6 | A | 31 | A | 56 | A | 81 | A |
| 7 | B | 32 | B | 57 | B | 82 | B |
| 8 | C | 33 | C | 58 | A | 83 | B |
| 9 | D | 34 | A | 59 | C | 84 | C |
| 10 | C | 35 | B | 60 | B | 85 | A |
| 11 | B | 36 | C | 61 | A | 86 | C |
| 12 | D | 37 | A | 62 | A | 87 | B |
| 13 | A | 38 | B | 63 | A | 88 | A |
| 14 | B | 39 | A | 64 | D | 89 | B |
| 15 | C | 40 | C | 65 | B | 90 | A |
| 16 | A | 41 | A | 66 | C | 91 | B |
| 17 | C | 42 | A | 67 | B | 92 | B |
| 18 | B | 43 | A | 68 | A | 93 | B |
| 19 | D | 44 | A | 69 | C | 94 | C |
| 20 | B | 45 | B | 70 | A | 95 | A |
| 21 | B | 46 | C | 71 | B | 96 | B |
| 22 | B | 47 | A | 72 | C | 97 | B |
| 23 | A | 48 | D | 73 | A | 98 | C |
| 24 | A | 49 | B | 74 | B | 99 | B |
| 25 | A | 50 | A | 75 | C | 100 | C |