Prepare for the BHEL Engineer Trainee (ET Electrical) recruitment examination with official previous years' solved question papers across Electric Circuits & Fields, Electrical Machines (Turbo-Generators, Synchronous & Induction Motors, Transformers), Power Systems (Generation, EHV Transmission, Grid Stability & Switchgear Protection), Control Systems, Power Electronics & HVDC Transmission, Electrical & Electronic Measurements, Analog & Digital Electronics, and General Engineering Aptitude.
Marking pattern: +1.00 positive, -0.25 (1/4th) negative marking (Official BHEL Engineer Trainee Computer-Based Test Scheme).
In a voltage divider biasing circuit of a MOSFET, the voltage at the gate is determined by:
What is the difference between a D flip-flop and a D latch?
In an RL circuit, the impulse response represents the inductor's reaction to a sudden voltage pulse. The current response of the RL circuit is:
Identify the correct statement related to the 'peak time' parameter of a second order control system.
Identify the correct statement related to the 'settling time' parameter of a second order control system.
A basic series inverter uses which of the following components to shape the output waveform?
How many inputs does a 2-bit comparator have?
In a 3-phase transmission line, the self-inductance per unit length is given by the formula:
Which of the following is a characteristic of an ideal voltage source?
Which theorem states that any linear electrical network with voltage and current sources can be replaced by an equivalent circuit consisting of a single voltage source and a series resistance?
The standard for vector group classification in transformers is defined in:
A circuit breaker is used in electrical systems primarily for:
If the secondary voltage of a transformer remains constant, what happens when the load impedance decreases?
What is the primary limitation of using a log amplifier circuit with a diode in the feedback loop?
What device is connected in antiparallel to each thyristor in DC-AC inverter applications?
What is the output impedance of a Darlington pair?
In a crystal oscillator circuit, what is the primary mechanism by which energy is transferred back to the crystal, causing it to oscillate?
In a crystal oscillator circuit, what is the primary mechanism by which energy is transferred back to the crystal, causing it to oscillate?
In multilevel converters, the output voltage waveform is composed of:
The Geometric Mean Distance (GMD) for calculating the self-inductance of a single-phase overhead transmission line refers to:
Which method is used for controlling the AC output voltage in a single-phase inverter?
In sinusoidal PWM, what is the relationship between switching and output frequencies?
The linearity property of the Z-Transform states that:
How does the inner cage of a double cage rotor contribute to the motor performance?
What happens to the torque ($T$) if the supply voltage ($V$) is reduced to 50% in a squirrel cage induction motor?