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Electrical engineering Practice Questions & Answers

0 vote

has tendency to oscillate.

Asked on by Guest | Votes 0

has tendency to oscillate.

A).  Open loop system

B).  Closed loop system

C).  Both (A) and (B)

D).  Neither (A) nor (B)

34 vote

Which of the following is the definition of proportional band of a controller ?

Asked on by Guest | Votes 34

Which of the following is the definition of proportional band of a controller ?

A).  The range of air output as measured variable varies from maximum to minimum

B).  The range of measured variables from set value

C).  The range of measured variables through which the air output changes from maximum to minimum

D).  Any of the above

E).  None of the above

24 vote

A reverse bias pn junction has ___________

Asked on by Guest | Votes 24

A reverse bias pn junction has ___________

A).  Very narrow depletion layer

B).  Almost no current

C).  Very low resistance

D).  Large current flow

0 vote

When a pure semiconductor is heated, its resistance ___________

Asked on by Guest | Votes 0

When a pure semiconductor is heated, its resistance ___________

A).  Goes up

B).  Goes down

C).  Remains the same

D).  Can?t say

0 vote

The leakage current across a pn junction is due to ___________

Asked on by Guest | Votes 0

The leakage current across a pn junction is due to ___________

A).  Minority carriers

B).  Majority carriers

C).  Junction capacitance

D).  None of the above