Electronic Principles Which one of the following devices is most often used for measuring opposition to current flow in a circuit? Ammeter Voltmeter Ohmmeter Wattmeter None of these Ammeter Voltmeter Ohmmeter Wattmeter None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs? I = P/E P = IE P = E2/R P = I2R None of these I = P/E P = IE P = E2/R P = I2R None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has two different voltage sources that are connected in a series-aiding form. If the sources are rated at 6 V and 9 V, what is the total source voltage? 15 V 7.5 V None of these 8 V 16 V 15 V 7.5 V None of these 8 V 16 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles One henry of inductance is defined as: the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second the amount of counter emf required to reduce a current to 1 A the amount of inductance required to change the frequency of a current by 1 Hz the number of turns of wire in an inductor multiplied by the amount of current flowing through it None of these the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second the amount of counter emf required to reduce a current to 1 A the amount of inductance required to change the frequency of a current by 1 Hz the number of turns of wire in an inductor multiplied by the amount of current flowing through it None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 18 V 12 V 24 V None of these 30 V 18 V 12 V 24 V None of these 30 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 megohms is: one-millionth of an ohm None of these one million ohms 1 k ohm 100,000 ohm one-millionth of an ohm None of these one million ohms 1 k ohm 100,000 ohm ANSWER DOWNLOAD EXAMIANS APP
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