A device that converts mechanical into electrical energy is? thermocouple chemical cell None of these solar cell generator TRUE ANSWER : ? YOUR ANSWER : ?
Holes are the minority carriers in which type of semiconductor? n-type p-type None of these Extrinsic Intrinsic TRUE ANSWER : ? YOUR ANSWER : ?
Doubling the operating voltage of a purely capacitive circuit: doubles the amount of capacitive reactance has no effect on the capacitive reactance None of these cuts the capacitive reactance in half multiplies the capacitive reactance by 7 TRUE ANSWER : ? YOUR ANSWER : ?
A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? None of these 400 Ohm 410 Ohm 550 Ohm 310 Ohm TRUE ANSWER : ? YOUR ANSWER : ?
A device that converts light energy to electrical energy is called a: photodiode solar cell photo transistor thermocouple None of these TRUE ANSWER : ? YOUR ANSWER : ?
When operating above its resonant frequency, a series RLC circuit has the characteristics of a: purely resistive circuit series RL circuit series RLC circuit operated below its resonant frequency series RC circuit None of these TRUE ANSWER : ? YOUR ANSWER : ?
What is a negative ion? An atom that contains more protons than electrons An atom that contains more protons than neutrons An atom that contains more electrons than neutrons None of these An atom that contains more electrons than protons TRUE ANSWER : ? YOUR ANSWER : ?
A device that converts mechanical pressure to electrical energy is called a: nicad cell piezoelectric device None of these photodiode solar cell TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating? P = E2/R R = E2/P I = P/E None of these P = PR TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following statements is true for the impedance of a series RC circuit? The impedance is less than the sum of the resistance and capacitive reactance The impedance is greater than either the resistance or capacitive reactance but less than their sum The impedance is greater than the sum of the resistance and capacitive reactance None of these The impedance is equal to the sum of the resistance and capacitive reactance TRUE ANSWER : ? YOUR ANSWER : ?