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