A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 3.75 mA 3.2 mA 13 mA 0.05 mA None of these TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following statements is true for the voltages in a series RL circuit? The voltage always has the same amplitude and phase for every part of the circuit The total voltage lags the total current by less than 90 The total voltages is equal to the sum of the voltages across the resistance and inductance None of these The total voltage is less than the sum of the voltages across the resistance and inductance TRUE ANSWER : ? YOUR ANSWER : ?
The saturation point is approximately the same as lower end of the load line cutoff point infinity None of these upper end of the load line TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it? I = ER None of these E = I2R E = PR I = E/R TRUE ANSWER : ? YOUR ANSWER : ?
When the Q point moves along the load line, the voltage increases when the current Increases Can be any of above Decreases None of these Stays the same TRUE ANSWER : ? YOUR ANSWER : ?
The value of a capacitor can be made larger by: decreasing the area of the plates increasing the frequency of the applied voltage increasing the voltage applied to the plates None of these increasing the area of the plates TRUE ANSWER : ? YOUR ANSWER : ?
The direction of conventional current flow is: None of these from left to right from neutral to positive from positive to negative from negative to positive TRUE ANSWER : ? YOUR ANSWER : ?
What is the algebraic sum of this series of values:+2, -3, -6,+4? -3 -6 2 None of these TRUE ANSWER : ? YOUR ANSWER : ?
The equivalent of 1 micro A is: 1000 A one-millionth of an ampere 10000A one million amperes None of these TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following statements most accurately describes the nature of inductive reactance? None of these Inductive reactance is an opposition to current flow in dc circuits Inductive reactance is another term for counter emf Inductive reactance is an opposition to current flow in ac circuits Inductive reactance is a force that tends to overcome the effects of counter emf TRUE ANSWER : ? YOUR ANSWER : ?