Electronic Principles Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff? None of these 6 Ohm 50 Ohm or more 5 Ohm 100 Ohm None of these 6 Ohm 50 Ohm or more 5 Ohm 100 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles For a pure capacitor: ac current lags the voltage by 90 degree ac current is converted to dc voltage ac current and voltage are exactly in phase None of these ac current leads the voltage by 90 degree ac current lags the voltage by 90 degree ac current is converted to dc voltage ac current and voltage are exactly in phase None of these ac current leads the voltage by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: an increase in current through the coil causes no further increase in the mmf None of these frequent changes in the direction of current through the coil causes heating effects in the core material changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil an increase in current through the coil causes no further increase in the mmf None of these frequent changes in the direction of current through the coil causes heating effects in the core material changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The current gain of a transistor is defined as the ratio of the collector current to the base current emitter current collector current None of these supply current base current emitter current collector current None of these supply current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of an inductive circuit: multiplies the inductive reactance by 6.28 doubles the amount of inductive reactance None of these has no effect on the inductive reactance cuts the inductive reactance in half multiplies the inductive reactance by 6.28 doubles the amount of inductive reactance None of these has no effect on the inductive reactance cuts the inductive reactance in half ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 micro A is: one million amperes 1000 A 10000A None of these one-millionth of an ampere one million amperes 1000 A 10000A None of these one-millionth of an ampere ANSWER DOWNLOAD EXAMIANS APP
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