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