GURU MCQs provides Electrical Engineering MCQs for Job Test and Interview Preparation, suitable for fresh graduates, students, and competitive exams. Most repeated Electrical Engineering MCQs section is frequently encountered in CSS, PMS, Inspector, ASI, Sub-inspector, Constable, FPSC, PPSC, ETEA, FIA, Police, Army, Navy, Airforce, IB, MOFA, ASF, LHC, Educators, and various other competitive exams, as well as government and private job assessments. Electrical Engineering most repeated MCQs include Analog and Digital Communications, Control Systems, Power Electronics, Electric Circuits, Electric machines, Electrical measurement & units, Utilization of Electrical Energy, Basic Electrical Engineering, Electrical Installation, Power Systems, Testing & maintenance of electrical equipment’s – and much more.
51. The substances which have a large number of free electrons and offer a low resistance are called____?
A. insulators
B. inductors
C. semi-conductors
D. conductors
52. Out of the following which is not a poor conductor__________?
A. Cast iron
B. Copper
C. Carbon
D. Tungsten
53. Out of the following which is an insulating material____________?
A. Copper
B. Gold
C. Silver
D. Paper
54. The property of a conductor due to which it passes current is called___________?
A. resistance
B. reluctance
C. conductance
D. inductance
55. Conductance is reciprocal of____________?
A. resistance
B. inductance
C. reluctance
D. capacitance
56. The resistance of a conductor varies inversely as___________?
A. length
B. area of cross-section
C. temperature
D. resistivity
57. With rise in temperature the resistance of pure metals______________?
A. increases
B. decreases
C. first increases and then decreases
D. remains constant
58. With rise in temperature the resistance of semi-conductors_________________?
A. decreases
B. increases
C. first increases and then decreases
D. remains constant
59. The resistance of a copper wire 200 m long is 21 Q. If its thickness (diameter) is 0.44 mm, its specific resistance is around_______________?
A. 1.2 x 10~8 Q-m
B. 1.4 x 10~8 Q-m
C. 1.6 x 10″”8 Q-m
D. 1.8 x 10″8 Q-m
60. An instrument which detects electric current is known as_____________?
A. voltmeter
B. rheostat
C. wattmeter
D. galvanometer