SSC JE Electrical Engineering Solved Papers
Prepare for SSC JE Electrical with official previous years' solved questions across Basic Concepts & Circuit Law, Magnetic Circuits, AC Fundamentals, Measurement & Measuring Instruments, Electrical Machines, Generation, Transmission & Distribution, Estimation & Costing, and Basic Electronics.
All SSC JE Electrical Solved Papers / All Technical Domains / All Chapters
Marking pattern: +1.00 positive, -0.25 negative for Paper-I (Official SSC JE Scheme).
The coils of a DC motor starter are wound with wire of Manganin because of the ________ temperature coefficient of resistance and ________ thermoelectric EMF, respectively.
Which of the following motors divides the full rotation into equal number of steps?
An overhead transmission line is supported by supports at equal levels. Assuming the weight per unit length and tension in the conductor constant, if the length of the conductor span is ________ then the sag will decrease by 25%.
Which of the following application of CRO is incorrect?
Which of the following is the most important factor governing the selection of an electric motor among the following options?
Explore the characteristics of outdoor cables and their suitability for different conditions. Assess the following statements and determine their correctness.
Statements:
I. Outdoor cables are designed to be buried underground and can withstand exposure to harsh elements.
II. Underground Burial Cables, with water-blocking fillers or polymer gel, ensure long-term resistance to water infiltration into the core.
Which of the given options best describes the truthfulness of the following statements?
P: Within the solenoid, the field lines are in the form of parallel straight lines.
Q: The field within the solenoid is uniform.
R: Both ends of the solenoid act as magnetic north poles.
Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R).
(A): Synchronous motors can be used to improve the voltage regulation of the transmission lines.
(R): Synchronous motors are well suited where constant speed is required.
Match the Following:
| Function | Devices |
|---|---|
| 1. Producing Electron beam | A. Trigger circuit |
| 2. Deflected beam appear | B. Fluorescent screen |
| 3. Synchronising the deflection of electron beam | C. Electron gun |
| 4. Generate different type of wave | D. Function generator |
Find the voltage $V_{ab}$ between terminals 'a' and 'b' in the following figure.
![Circuit Diagram / Instrument Scale](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 460 260" width="420" height="230" style="background-color:%23ffffff;"><circle cx="60" cy="120" r="22" fill="%23ffffff" stroke="%23000000" stroke-width="2"/><text x="60" y="113" f)
What is the power consumption, in watts, of a $\frac{1}{4}\text{ HP}$ motor, according to the provided information?
Which of the following statements are correct?
P: Biomass energy or fuel cannot be stored and distributed.
Q: The emissions from biomass energy generation can potentially pollute the environment.
R: Biomass power plants that use pyrolysis are more efficient than direct combustion power plants.
Which of the following equations is correct according to the given parallel circuit?
With reference to DC arc welding, which of the following statements is INCORRECT?
What type of component in an electrical circuit has to be used to deliver power or process electrical signals?
Which of the following pairs of typical diodes and their corresponding threshold voltages is correct?
Explore the components and systems related to the thermal power plant. Assess the following statements and determine their correctness.
Statements:
I. Ash handling plants (AHPs) remove ash from furnace ash hoppers, convey it through mechanical, hydraulic, or pneumatic transport, and dispose of the stored ash.
II. The electrical thermal plant involves supplying medium voltage, low voltage, and direct current power to all loads in the power plant, covering aspects from power evacuation to switchyard control.
A 240-V DC shunt motor has an armature resistance of $0.25\ \Omega$ and runs at 1000 RPM, taking an armature current of $40\text{ A}$. It is desired to reduce the speed to 800 RPM. If the armature current remains the same, find the additional resistance to be connected in series with the armature circuit.
Which of the following is a VALID disadvantage of single bus bar system?
Under no-load conditions, if the frequency of the AC supply is decreased while maintaining a constant magnetic flux in a single-phase transformer, what is the anticipated impact on the induced voltage in the secondary winding?
Which of the following is NOT a valid disadvantage of shaded-pole type single-phase induction motor?
A 36-pole alternator running at a speed of ________ RPM will produce a frequency of 60 Hz.
Which of the following is the correct classification of distribution systems according to the nature of the current?
Which of the following oscillators is generally considered a fixed frequency oscillator?
With reference to the methods of determination of voltage regulation of smooth cylindrical rotor type alternators, which of the following methods is known as zero-power factor method?