# Electronic Principles Computer Science Questions – set 15

Are you guys looking for computer science MCQ Questions with Answers PDF Free Download as per computer science new exam pattern? You came to the right page. This may assist you to understand and check your knowledge about the Subjects. Students also can take a free test of the Multiple Choice Questions of computer science. Each question has four options followed by the right answer. These computer science MCQ Questions are selected supported by the newest exam pattern.

## Q1. Which one of the following statements is true for the currents in a parallel RC circuit?

(A) The total current is equal to the sum of the currents for the resistance and capacitance
(B) The current always has the same amplitude and phase for every part of the circuit
(C) The total current is less than the sum of the currents for the resistance and capacitance
(D) The total current is greater than the sum of the currents for the resistance and capacitance

Answer: (A) The total current is equal to the sum of the currents for the resistance and capacitance

(A) 754 Ohm
(B) 30 Ohm
(C) 60 Ohm
(D) 120 Ohm

## Q3. Which one of the following phrases best describes residual magnetism?

(A) Magnetism that remains in the core of an electromagnet after the current through the coil is turned off
(B) The force of attraction between the poles of a permanent and temporary magnetic field
(C) The amount of magnetic flux that is not confined to the core material of an electromagnet
(D) The circular magnetic field that surrounds a conductor carrying a current

Answer:(A) Magnetism that remains in the core of an electromagnet after the current through the coil is turned off

## Q4. To get the Norton current, you have to

(C) Short the voltage source
(D) Open the voltage source

Answer: (A) Magnetism that remains in the core of an electromagnet after the current through the coil is turned off

## Q5. A device that converts light energy to electrical energy is called a:

(A) Thermocouple
(B) Solar cell
(C) Photodiode
(D) Photo transistor

## Q6. Which one of the following statements is true for the voltages in a series RC circuit?

(A) The total voltage is equal to the sum of the voltages across the resistance and capacitance
(B) The voltage always has the same amplitude and phase for every part of the circuit
(C) The total voltage is less than the sum of the voltages across the resistance and capacitance
(D) The total voltage is greater than the sum of the voltages across the resistance and capacitance

Answer: (C) The total voltage is less than the sum of the voltages across the resistance and capacitance

## Q7. Which one of the following statements is true?

(A) Capacitive reactance is at a minimum for dc source voltages
(B) Capacitive reactance decreases as the operating frequency increases
(C) There is no meaningful relationship between capacitive reactance and operating frequency
(D) Capacitive reactance increases as the operating frequency increases

Answer: (B) Capacitive reactance decreases as the operating frequency increases

(A) Ammeter
(B) Voltmeter
(C) Ohmmeter
(D) Wattmeter

## Q9. The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be:

(A) One-half the primary current
(B) Same as the primary current
(C) Twice the primary current
(D) No more than 10% less than the primary current

Answer: (A) One-half the primary current

## Q10. If a load resistance is 1 kW, a stiff current source has a resistance of

(A) At least 10 Ohm
(B) Less than 10 Ohm
(C) More than 100 k Ohm
(D) Less than 100 k Ohm

Answer: (C) More than 100 k Ohm

(A) Extrinsic
(B) Intrinsic
(C) n-type
(D) p-type

(A) 0.93 W
(B) 0.93 V
(C) 1 A
(D) 9.3 W

## Q13. A device that converts mechanical into electrical energy is?

(A) Solar cell
(B) Thermocouple
(C) Chemical cell
(D) Generator

## Q14. Inductive reactance is measured in units of:

(A) Volts per second
(B) Amperes per second
(C) Ohm
(D) Henrys

## Q15. Molecule is

(A) The smallest particle of a substance that retains the properties of that substance
(B) An atom that has a shortage of electrons in its outer orbit
(C) An atom that has an excessive number of electrons in its outer orbit
(D) An atom that flows whenever there is an imbalance of electrical charges between two points

Answer: (A) The smallest particle of a substance that retains the properties of that substance

## Electronic Principles MCQ – All Set

We hope the given computer science Engineering on Electronic Principles MCQ Questions with Answers will definitely yield fruitful results. Hope you got enough ideas on the MCQs on Electronic Principles. If you have any queries related to computer science Engineering on Electronic Principles MCQs Multiple Choice Questions with Answers, drop your questions below and will get back to you as soon as possible.