ETEA MDCAT Past Paper 2021 ETEA MDCAT 16 September ( PART 4 ) 1. Magnetic field is also known as: Magnetosphere Electromagnetic force B-field Gauss field 2. When an electron moves into a field in the west direction and is directed towards the north due to the magnetic field, the direction of the magnetic field is: West South North East 3. The strength of the magnetic field produced by a solenoid depends on: The shape of the solenoid The core material it is wrapped around The current passing through the solenoid The radius of the solenoid 4. The electromotive force (EMF) produced by a generator depends on: The type of magnets used The temperature of the surroundings The rate of change of magnetic flux The size of the generator 5. If a transformer is heated up, what will happen to its current, voltage, and power? Current remains constant, voltage decreases, power decreases Current and voltage both increase, power increases Current decreases, voltage increases, power remains constant Current increases, voltage decreases, power increases 6. Which type of rectifier is most commonly used among half-wave and full-wave rectifiers Full-Wave Rectifier It varies based on the application Half-Wave Rectifier Neither is commonly used 7. What primarily provides resistance to the human body’s electrical conduction? Skin Blood Muscles Bones 8. Which of the following does the Theory of Relativity not relate to Gravitational waves Space-time relation Time dilation Quantum mechanics 9. Losses in a transformer are primarily due to which of the following factors Eddy currents and hysteresis Resistance of windings Core material Magnetic saturation 10. Electrons in a certain system are excited. On average, how long do these electrons stay in their excited state No any specific time 1 nanosecond 3 nanoseconds 2 nanoseconds Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11
