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.Management Sciences
Category: Electrical Engineering Mcqs
The path of a magnetic flux in a transformer should have______________?
A. high resistance
B. high reluctance
C. low resistance
D. low reluctance
Materials subjected to rapid reversal of magnetism should have______________?
A. large area oiB-H loop
B. high permeability and low hysteresis loss
C. high co-ercivity and high retentivity
D. high co-ercivity and low density
Which of the following is the major consideration to evolve a good design ?
A. Cost
B. Durability
C. Compliance with performance criteria as laid down in specifications
D. All of the above
Which of the following is not associated with a p-n junction?
A. junction capacitance
B. charge storage capacitance
C. depletion capacitance
D. channel length modulation
The leakage current in a crystal diode is due to _________________?
A. minority carriers
B. majority carriers
C. junction capacitance
D. none of the above
The r.m.s. value of pure cosine function is_________?
A. 0.5 of peak value
B. 0.707 of peak value
C. same as peak value
D. zero
Rise time is defined by the interval when____________?
A. gate current rises from 90 % to 100 % of it final value
B. anode voltage drops from 90 % to 10 % of its initial value
C. anode current rises 10 % to 90 % of its final value
D. both B and C
In a series parallel circuit, any two resistances in the same current path must be in___________?
A. series with each other
B. parallel with each other
C. series with the voltage source
D. parallel with the voltage source
Primary air is that air which is used to_____________?
A. reduce the flame length
B. increase the flame length
C. transport and dry the coal
D. provide air around burners for get¬ting optimum combustion
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