Official previous years' question bank with solutions for DC Generators & Motors, AC 3-Phase Induction Motors, Transformers, Armature Winding, Industrial Wiring, Battery Maintenance, and Earthing Practices.
Marking pattern: +1.00 positive, -0.25 negative (Official BHEL Artisan Pattern).
Which of the following analog instruments uses fluid friction damping?
Why is a multiplate construction used in lead-acid batteries?
What is the reactive power supplied by a 1-phase AC circuit for which V = 10∠-30° Volt and I = 10∠-30° ampere?
In a basic AC generator, what causes the sinusoidal variation of EMF?
The collector-base junction needs to be __________ and the base-emitter junction needs to be __________ for a PNP transistor to function efficiently as an amplifier.
Four cells are connected in parallel. Each cell is rated at 1.5 volts and 8 ampere-hours (AH). What is the total AH (ampere-hour) rating of the battery?
Which feature distinguishes a cold chisel from other chisels?
Which type of wiring is known for good appearance and high durability?
Overcharging a battery typically results in:
In a real transformer under a load, which of the following statements is true regarding flux in the core?
Which of the following is commonly adjusted during the calibration of an analog multimeter?
Which of the following is the defining characteristic of a primary cell?
__________ is a condition in a PN junction diode where the positive terminal of the battery is connected to the N-type region and the negative terminal is connected to the P-type region.
What is the primary purpose of using a growler to test a DC motor armature?
Which of the following types of electrical switches is shown in the given figure?
Which connection is used to reduce error in power measurement using a wattmeter?
Which device can be reset after a fault condition?
What is the primary function of an Automatic Meter Reading (AMR) system?
Which of the following correctly describes the transistor regions with respect to doping?
What is the primary function of a Miniature Circuit Breaker (MCB)?
The ability of a metal to be stretched into wires is called
Convert 78° into radian.
What does 'MCB' stand for in an electrical layout diagram?
What is the addition of 1/2 + 1/8 + 5/12?
Which of the following units are part of the CGS system?