Electrical Engineering Materials MCQs PDF download for electrical students. Includes MCQs with answers, and resources for competitive exams.
What is the nature of the coefficient of resistance of an insulator ?
A. Infinite
B. Zero
C. Negative
D. PositiveThe insulating capacity of material against high voltages is known as:
A. Electromechanical effect
B. Electrochemical effect
C. Dielectric strength
D. ThermoelectricityWhich of the following processes is not an application of thermoelectric effect ?
A. Thomson effect
B. Ettingshausen effect
C. Seebeck effect
D. Peltier effectWhat is the electrical resistivity of Copper ?
A. 2.65 * 10-8
B. 5.9 * 10-8
C. 1.59 * 10-8
D. 1.68 * 10-8What is the electrical conductivity of Aluminum ?
A. 3.5 * 107
B. 1 * 107
C. 6.3 * 107
D. 5.9 * 107Superconductors are currently utilized in
A. Generating electrostatic field
B. Generating regions free from magnetic field
C. Generating very strong magnetic field
D. Manufacture of bubble memoriesThe kinetic energy of a bounded electron is ____ ?
A. Infinite
B. Less than that of unbounded electron
C. Greater than that of unbounded electron
D. Equal to that of unbounded electronPiezoelectric materials serve as a source of:
A. Musical waves
B. Microwaves
C. Ultrasonic waves
D. Resonant wavesWhich of the following factors affects the materials resistivity ?
A. Length of the conductor
B. Resistance of the conductor
C. Area of the conductor section
D. All of themAlmost the entire mass of an atom is concentrated in the ____ ?
A. electrons
B. neutrons
C. nucleus
D. protons