Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 7.8 mA 200 mA 208 mA None of these 300 mA 7.8 mA 200 mA 208 mA None of these 300 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A real voltage source has Infinite internal resistance A large internal resistance Zero internal resistance None of these A small internal resistance Infinite internal resistance A large internal resistance Zero internal resistance None of these A small internal resistance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a load resistance is 1 kW, a stiff current source has a resistance of At least 10 Ohm More than 100 k Ohm Less than 100 k Ohm None of these Less than 10 Ohm At least 10 Ohm More than 100 k Ohm Less than 100 k Ohm None of these Less than 10 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements applies to common auto batteries? Auto batteries are secondary wet-cell batteries Auto batteries are primary dry-cell batteries Auto batteries are secondary dry-cell batteries Auto batteries are primary wet-cell batteries None of these Auto batteries are secondary wet-cell batteries Auto batteries are primary dry-cell batteries Auto batteries are secondary dry-cell batteries Auto batteries are primary wet-cell batteries None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Reducing the amount of current through an inductor: None of these has no effect on the inductance multiplies the value of inductance by two reduces the value of inductance by one-half multiplies the value of inductance by four None of these has no effect on the inductance multiplies the value of inductance by two reduces the value of inductance by one-half multiplies the value of inductance by four ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How may valence electrons does a silicon atom have? 4 2 1 None of these 4 2 1 None of these ANSWER DOWNLOAD EXAMIANS APP
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