Which of the following correctly differentiates mixtures and compounds? — Electrical Engineering MCQ

B. Option A (Separation) is correct

A. Option B (Composition) is correct

C. Option D (Formation) is correct

D. Option C (Properties) is correct

What happens when you click on the 'Forward' button in an email? — Electrical Engineering MCQ

D. The original message is copied into a new email draft.

A. The email is automatically sent to all contacts.

C. The email is permanently deleted.

In large-scale solar PV plants, why is string inverter technology preferred over central inverters in some cases? — Electrical Engineering MCQ

C. It reduces power losses due to shading and mismatch.

A. It requires fewer connections and is easier to maintain.

B. It generates higher voltage DC output.

D. It eliminates the need for AC cabling.

Why is an electrodynamometer-type wattmeter used as a standard instrument in laboratories? — Electrical Engineering MCQ

B. It has high accuracy and precision.

A. It works only for low-power circuits.

C. It is cheaper than other wattmeters.

D. It requires no external power supply.

What is the purpose of '100% Stator Earth Fault Protection' in an alternator? — Electrical Engineering MCQ

B. To detect and protect against earth faults occurring anywhere in the stator winding

A. To monitor the voltage regulation of the alternator

C. To detect and protect against phase-to-phase faults in the stator winding

D. To protect the rotor winding from overheating

The 'π (Pi) Model' or the 'T Model' is commonly used to represent which type of transmission line? — Electrical Engineering MCQ

A. Medium transmission line (80 km to 160 km)

B. Long transmission line (more than 160 km)

C. Ultra-high voltage transmission line (above 1000 km)

D. Short transmission line (less than 80 km)

What is the primary purpose of estimation and costing in unit earthing for commercial installations? — Electrical Engineering MCQ

B. To determine the materials, labour and costs required for a safe and effective earthing system

A. To eliminate the need for earthing in electrical systems

C. To ensure the earthing system is aesthetically pleasing

D. To focus only on the decorative aspects of the installation

The difference between Capacity Factor and Load Factor represents __________. — Electrical Engineering MCQ

D. the plant's reserve capacity for future load growth

A. the total energy consumed by the plant

B. the plant's efficiency in converting fuel to electricity

C. the maximum demand of the plant

Fleming's Right-Hand Rule is used to determine the direction of: — Electrical Engineering MCQ

B. the induced electromotive force

A. magnetic field around a conductor

D. current flowing through a conductor

In a three-phase star-connected system with a neutral shift, how can the problem be corrected? — Electrical Engineering MCQ

D. By balancing the load among the three phases

A. By increasing the phase voltage

B. By increasing the neutral wire resistance

C. By disconnecting the neutral wire

What is the purpose of a closed feeder ring in an interconnected system? — Electrical Engineering MCQ

D. To create a looped power supply network

B. To prevent power distribution

C. To disconnect substations from each other

Which of the following is a common internal fault in transformers? — Electrical Engineering MCQ

D. Winding inter-turn short circuits

A. High power factor leading to overheating

B. Excessive cooling system efficiency

C. Overvoltage due to lightning strikes

When armature conductors carry a lower load current, the armature's MMF (magnetomotive force) causes: — Electrical Engineering MCQ

A. no effect on the main field flux

B. the main field flux to strengthen

C. an increase in the induced emf

Shaded pole motors are ideal for ____________. — Electrical Engineering MCQ

A. low-power, continuous-duty applications

B. intermittent heavy-load tasks

Why does Kelvin's Law give different conductor sizes for two identical systems? — Electrical Engineering MCQ

B. Due to variations in interest rates, depreciation, and energy costs

A. Because the electrical load is different in both systems

C. Because one system uses overhead lines and the other uses underground cables

D. Because the resistance of conductors is always changing

Which of the following is a commonly used light source in modern street light installations? — Electrical Engineering MCQ

D. High-Pressure Sodium (HPS) lamps

Which of the following will increase the heat produced by a heating element? — Electrical Engineering MCQ

A. Increasing the current flowing through the wire

B. Using a material with high conductivity

C. Using a wire of lower resistance

D. Decreasing the applied voltage

Identify the correct statement related to switching speed of the BJT. — Electrical Engineering MCQ

C. Switching speed of BJT is less compared to switching speed on a MOSFET.

A. Switching speed of BJT is greater than switching speed on a MOSFET.

B. Switching speed of BJT is equal to switching speed on a MOSFET.

D. BJT is an amplifying device and hence cannot work as a switch.

Which of the following is a key characteristic of a slip ring induction motor? — Electrical Engineering MCQ

D. High starting torque and low starting current

A. High efficiency at all loads

B. Low starting torque and high starting current

C. Operates only at synchronous speed

RRB JE CBT 2 ELECTRICAL QUESTION - RRB JE Electrical and Allied Engineering Shift-01 22.04.2025

RRB JE Electrical and Allied Engineering Shift-01, 22.04.2025

The capacitance of a parallel plate capacitor depends upon:

RRB JE CBT 2 22-4-2025

The total collector current for a BJT operating in the active region is given by the relation _________ and the leakage current component is ___________.

RRB JE CBT 2 22-4-2025

In a three-phase induction motor which component represents mechanical load in the equivalent circuit?

RRB JE CBT 2 22-4-2025

Which underground cable laying method requires re-excavation for load expansion, making modifications costly?

RRB JE CBT 2 22-4-2025

How can polarity in transformers be verified?

RRB JE CBT 2 22-4-2025

How does the starting torque of a split-phase motor compare with that of a shaded-pole motor?

RRB JE CBT 2 22-4-2025

For a P-N junction diode, as the temperature increases the forward knee voltage of the diode ________ and the reverse saturation current __________.

RRB JE CBT 2 22-4-2025

Read the given Assertion (A) and Reason (R): (A): The burden of an instrument transformer is usually expressed in volt-amperes (VA). (R): Burden is the total impedance of the connected devices, including meters, relays, and wiring.

RRB JE CBT 2 22-4-2025

A composite magnetic circuit consisting of three different magnetic material of different permeability are joined in the form of a ring. The total reluctance is:

RRB JE CBT 2 22-4-2025

Which of the following is the commonly used generator in a DC welding machine?

RRB JE CBT 2 22-4-2025

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