Electrical Engineering Practice Impotent Questions Part 3
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35-Every chemical element has its own unique type of particle, called its:
A. Molecule
B. Electron
C. Proton
D. Atom
Ans: D. Atom
36-Which of the following can be measured by using Hall՚s effect?
A. Magnetic field intensity
B. Electric energy
C. Electrostatic field intensity
D. Average number of holes
Ans: A. Magnetic field intensity
37-ThePotentialbarrieringermaniump-njunctionis:
A. 0.3 volt
B. 0.7 volt
C. 1 volt
D. 0.5 volt
Ans: A. 0.3 volt
38-A solid state detector mainly consists of a
A. Silicon diode
B. Silicon crystal
C. Transistor
D. Germanium Crystal
Ge and Si both are used as solid state detector.
Ans: D. Germanium Crystal
39-The series parallel combination of solar cells is known as:
A. Photo-combination cell
B. Photoelectric cell
C. Photovoltaic array
D. Combination diode
Ans: C. Photovoltaic array
40-A binary digital system deals with quantities or variables which have … discrete values or states.
A.
B.
C.
D.
E.
Ans: C.
41-The ripple factor is … for a half wave rectified sine wave.
A.
B.
C.
D.
Ans:
42-Who discovered the thermionic emission?
A. Gamows
B. Lee de forest
C. Edison
D. Rutherford
43-In the FET, current flows along a semiconductor path called:
A. Channel
B. Drain
C. Source
D. Junction
Ans: A. Channel
44-Lenz՚s law is a statement of law of conservation … that can be conveniently applied to the circuits involving induced currents.
A. Energy
B. Mass
C. Charge
D. Momentum
Ans: A. Energy