Electronic Principles MCQ Questions & Answers | Computer Science

A. 0

B. 1

C. 2

D. 3

E. None of the above

A. Ammeter

B. Voltmeter

C. Ohmmeter

D. Wattmeter

E. None of the above

A. Electronical energy

B. Mechanical energy

C. Chemical energy

D. Solar energy

E. None of the above

A. The voltage waveform for each component always has the same amplitude and phase as the applied voltage

B. The sum of the current is always less than the applied current

C. The current waveform for each component always has the same amplitude and phase as the applied current

D. All of the above

E. None of the above

A. 10000A

B. 1000 A

C. one-millionth of an ampere

D. one million amperes

E. None of the above

A. Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet

B. Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet

C. Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently

D. Hysteresis is most apparent when the core material is saturated

E. None of the above

A. Magnetism that remains in the core of an electromagnet after the current through the coil is turned off

B. The force of attraction between the poles of a permanent and temporary magnetic field

C. The amount of magnetic flux that is not confined to the core material of an electromagnet

D. The circular magnetic field that surrounds a conductor carrying a current

E. None of the above

A. 7.8 mA

B. 208 mA

C. 200 mA

D. 300 mA

E. None of the above

A. P = I²R

B. P = IE

C. P = E²/R

D. I = P/E

E. None of the above

A. Resistances provide the only opposition to current flow

B. Inductive reactance provides the only opposition to current flow

C. Combinations of resistance and inductive reactance provide any opposition to current flow

D. The ac voltage lags the current by 90 degree

E. None of the above