Electrical circuits & fields

Electrical circuits & fields
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Electrical circuits & fields
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Help me understand the wording of this problem (electrical circuits homework)?

Description : Help me understand the wording of this problem (electrical circuits homework)?

Last Answer : Sounds right to me.

Which is electrical circuits used to get smooth de output from a rectified circuit called? -General Knowledge

Description : Which is electrical circuits used to get smooth de output from a rectified circuit called? -General Knowledge

Last Answer : The answer is 'Filter'

Which is electrical circuits used to get smooth de output from a rectified circuit called? -General Knowledge

Description : Which is electrical circuits used to get smooth de output from a rectified circuit called? -General Knowledge

Last Answer : answer:

What is a phasor? (this is an analysis of electrical circuits)

Description : It is important in the title, I do not know what exactly it is, I just remember the marking 'roof'.

Last Answer : Need Answer

Why do scientists use in diagrams of electrical circuits?

Description : Why do scientists use in diagrams of electrical circuits?

Last Answer : Scientists use symbols for diagrams of electrical circuits for asimple reason; to save space. The actuall names of the componentswould take up immense space on the diagram.

Which of the following statements represents the FIRST precaution to be taken prior to working on any installed electrical component? A. Wear rubber gloves and boots. B. Use only approved nonconducting tools. C. Ground the case of the machine before beginning any repairs. D. Open the supply circuits and tag the switches.

Description : Which of the following statements represents the FIRST precaution to be taken prior to working on any installed electrical component? A. Wear rubber gloves and boots. B. Use only approved nonconducting ... the machine before beginning any repairs. D. Open the supply circuits and tag the switches.

Last Answer : Answer: D

When working on electrical circuits containing large capacitors, in addition to deenergizing the circuit, which of the listed precautions should also be taken? A. Keep all radio equipment away. B. Measure capacitor insulation resistance. C. Ground the capacitor terminals. D. Check capacitor circuit polarity.

Description : When working on electrical circuits containing large capacitors, in addition to deenergizing the circuit, which of the listed precautions should also be taken? A. Keep all radio equipment ... capacitor insulation resistance. C. Ground the capacitor terminals. D. Check capacitor circuit polarity.

Last Answer : Answer: C

When shipboard electrical distribution circuits are connected in parallel, additional parallel circuits will cause the total circuit resistance to _____________. A. increase, causing a drop in the line current B. increase, causing a decrease in the line voltage C. decrease, causing an increase in the line voltage D. decrease, causing an increase in the line current

Description : When shipboard electrical distribution circuits are connected in parallel, additional parallel circuits will cause the total circuit resistance to _____________. A. increase, causing a drop in the line current B ... an increase in the line voltage D. decrease, causing an increase in the line current

Last Answer : Answer: D

The part of the shipboard electrical system used to control the distribution of power to the branch circuits, is the _____________. A. bridge control panel B. disconnect links C. governor relay box D. main switchboard

Description : The part of the shipboard electrical system used to control the distribution of power to the branch circuits, is the _____________. A. bridge control panel B. disconnect links C. governor relay box D. main switchboard

Last Answer : Answer: D

Electrical circuits are protected against overheating by means of a/an ______________. A. circuit breaker B. amplifier C. diode D. capacitor

Description : Electrical circuits are protected against overheating by means of a/an ______________. A. circuit breaker B. amplifier C. diode D. capacitor

Last Answer : Answer: A

Which is electrical circuits used to get smooth de output from a rectified circuit called?

Description : Which is electrical circuits used to get smooth de output from a rectified circuit called?

Last Answer : Filter

Device used to store energy in electrical circuits is A. resistor B. inductor C. capacitor D. diode

Description : Device used to store energy in electrical circuits is A. resistor B. inductor C. capacitor D. diode

Last Answer : capacitor

Which system is used in digital computers because all electrical and electronic circuits can be made to respond to the states concept: a. Hexadecimal number b. Binary number c. Octal number d. Decimal number

Description : Which system is used in digital computers because all electrical and electronic circuits can be made to respond to the states concept: a. Hexadecimal number b. Binary number c. Octal number d. Decimal number

Last Answer : b. Binary number

Protective relays are devices that detect abnormal conditions in electrical circuits by measuring (a) current during abnormal condition (b) voltage during abnormal condition (c) constantly the electrical quantities which differ during normal and abnormal conditions (d) none of the above

Description : Protective relays are devices that detect abnormal conditions in electrical circuits by measuring (a) current during abnormal condition (b) voltage during abnormal condition (c) constantly the electrical quantities which differ during normal and abnormal conditions (d) none of the above

Last Answer : (c) constantly the electrical quantities which differ during normal and abnormal conditions

Capacitors and inductors are commonly used in circuits. Capacitors store electrical energy in the electric field between their plates. How do inductors store energy?

Description : Capacitors and inductors are commonly used in circuits. Capacitors store electrical energy in the electric field between their plates. How do inductors store energy?

Last Answer : ANSWER: IN A MAGNETIC FIELD SURROUNDING THE INDUCTOR 

Protective relays are devices that detect abnormal conditions in electrical circuits by measuring?

Last Answer : Protective relays are devices that detect abnormal conditions in electrical circuits by measuring constantly the electrical quantities which differ during normal and abnormal conditions.

List any four applications of insulting material used in electrical fields.

Description : List any four applications of insulting material used in electrical fields. 

Last Answer : Applications of insulting material used in electrical fields: 1. In Electrical machines 2. In electrical transformers. 3. Transformer bushing 4. Insulators 5. Domestic equipment’s ( or any other equivalent applications) 6. Insulation on wires and cables 

Compare AC & DC track circuits on i) Length of circuit ii) Application iii) Effect of stray currents. iv) Maintenance

Description : Compare AC & DC track circuits on i) Length of circuit ii) Application iii) Effect of stray currents. iv) Maintenance

Last Answer : Ans: i) Length of circuit - a) AC track circuit is having long length upto 3 to 5 km b) DC track circuit is having short length  ii)Application -a) AC track circuit is used ... ) Maintenance - a) AC track circuit has easier and cheaper maintenance b) DC track circuit has complicated maintenance 

The Gondwana Coal fields are found in (1) Madhya Pradesh (2) West Bengal (3) Assam (4) Jammu & Kashmir

Description : The Gondwana Coal fields are found in (1) Madhya Pradesh (2) West Bengal (3) Assam (4) Jammu & Kashmir

Last Answer : (1) Madhya Pradesh Explanation: Almost all of India's coal reserves are of Gondwana coal. The Gondwana coal is said to be 250 million years old and includes mainly coking, non-coking and bituminous coal. The Gondwana coalfields extend from Bengal, Jharkhand, Bihar, Odisha to Madhya Pradesh.

Medicine technology have applications in the fields of i) Pharmacy ii) Prosthetics iii) Both A & B iv) None of these

Description : Medicine technology have applications in the fields of i) Pharmacy ii) Prosthetics iii) Both A & B iv) None of these

Last Answer : iii) Both A & B

State different types of power in ac circuits. Write the expression and units for the same. Draw the power triangle.

Description : State different types of power in ac circuits. Write the expression and units for the same. Draw the power triangle. 

Last Answer : i) Active Power (P):- The active power is defined as the average power Pavg taken by or consumed by the given circuit.   ii) Reactive Power (Q):-  The reactive power is defined as the product of ... values of voltage (v) and current (I) it is given by    iv) Power Triangle: 

Define following terms used in A.C. circuits : (i) Cycle (ii) Rms value (iii) Phase difference (iv) Average value

Description : Define following terms used in A.C. circuits : (i) Cycle (ii) Rms value (iii) Phase difference (iv) Average value

Last Answer : (i) Cycle:   A complete set of variation of an alternating quantity which is repeated at regular interval of time is called as a cycle. OR  Each repetition of an alternating quantity ... charge as is transferred by the alternating current during the same time under the same conditions. 

State the Thevenin’s theorem. Also write stepwise procedure for applying Thevenin’s theorem to simple circuits.

Description : State the Thevenin’s theorem. Also write stepwise procedure for applying Thevenin’s theorem to simple circuits.

Last Answer : Thevenin's Theorem: Any two terminal circuit having number of linear impedance and sources (voltage, current, dependent, independent) can be represented by a simple equivalent circuit consisting of a single voltage ... 's equivalent circuit: Step V: Determination of Load current:

Series rc circuits

Description : Series rc circuits

Last Answer : Series rc circuits

Circuits with capacitive reactance X C alone

Last Answer : Circuits with capacitive reactance X C alone. Capacitive reactance X C values in series. There is no resistance or inductive reactance only capacitive reactance is there. Let two capacitive ... horizontal in phasor diagram. The total current I T leads voltage V A by 90 degree.

Circuits with XL Alone

Description : Circuits with XL Alone

Last Answer : Circuits with XL Alone X L values in series let two inductive reactances X L 1 and X L 2 are connected in series and has value 50 ohm and 50 ohm respectively. 100 volts A C ... phasor. And it is taken horizontal. Phase angle between inductive current and voltage is same 90 degree.

AC Circuits with Resistance but No Reactance

Description : AC Circuits with Resistance but No Reactance

Last Answer : AC Circuits with Resistance but No Reactance AC Circuits with Resistance but No Reactance Series resistances let two resistances R 1 and R 2 are connected in series as shows in figure and there ... voltage. Voltage V A is common to both the branch hence voltage V A is common reference.

Nodal Analysis of Electric Circuits Example

Description : Nodal Analysis of Electric Circuits Example

Last Answer : Nodal Analysis of Electric Circuits Example 1 : https://youtu.be/XLS6kDQuHj0 Nodal Analysis of Electric Circuits Example 2 : https://youtu.be/OFhurvl74bA Nodal Analysis of Electric Circuits ... youtu.be/GmOozdjTVtM Nodal Analysis of Electric Circuits Example 9 : https://youtu.be/KjgfjJ7Ubb8

What is the need of polarity marking in polyphase AC circuits?

Description : What is the need of polarity marking in polyphase AC circuits?

Last Answer : Need of Polarity Marking in Polyphase AC Circuits: i) Polarity marking of terminals provides reference polarity for better understanding of system, even if the polarity of ac voltage changes ... of current transformers in relay protection circuit and getting desired performance is very difficult.

State superposition theorem applied to D.C. circuits.

Description : State superposition theorem applied to D.C. circuits.

Last Answer : Superposition Theorem applied to D.C. circuits: Superposition theorem states that in any linear, bilateral, multisource network, the response (voltage across any element or current through any ... each source acting alone, while the other sources are replaced by their internal resistances.

State two advantages of digital circuits.

Description : State two advantages of digital circuits.

Last Answer : Advantages of Digital Circuits: i) Digital circuits are easier to design. ii) Information storage is easy. iii) Accuracy and precision are greater. iv) Less affected by noise. v) Reliability is more

The instantaneous power in ac circuits can be obtained by taking product of the instantaneous values of

Description : The instantaneous power in ac circuits can be obtained by taking product of the instantaneous values of 

Last Answer : The instantaneous power in ac circuits can be obtained by taking product of the instantaneous values of current and voltage

Which of the following is true at resonance in LC circuits?

Description : Which of the following is true at resonance in LC circuits? A) The series impedance of the two elements is at a maximum and the parallel impedance is at minimum B) The series impedance of the ... D) The series impedance of the two elements is at a minimum and the parallel impedance is at maximum

Last Answer : Which of the following is true at resonance in LC circuits? A) The series impedance of the two elements is at a maximum and the parallel impedance is at minimum B) The series impedance of ... D) The series impedance of the two elements is at a minimum and the parallel impedance is at maximum

Kirchhoff's current law is applicable to 1. Closed loops in a circuit 2. Junction in a circuit 3. Magnetic circuits ...

Description : Kirchhoff's current law is applicable to 1. Closed loops in a circuit 2. Junction in a circuit 3. Magnetic circuits Which of the above is/are correct ?  (a) 1 only (b) 2 only (c) 3 only (d) 1, 2 and 3

Last Answer : Kirchhoff's current law is applicable to 1. Closed loops in a circuit 2. Junction in a circuit 3. Magnetic circuits Which of the above is/are correct ?  (a) 1 only (b) 2 only (c) 3 only (d) 1, 2 and 3

There are no transients in pure resistance circuits because they

Description : There are no transients in pure resistance circuits because they (a) Offer high resistance (b) Obey Ohm's law (c) Have no stored energy (d) Are linear circuits

Last Answer : There are no transients in pure resistance circuits because they Have no stored energy

For integrated circuits photolithography is used to remove areas of a protective layer so that...

Description : For integrated circuits photolithography is used to remove areas of a protective layer so that (a) Chemical reactions can take place in exposed areas. (b) Chemical reactions can take place in ... can take place in transparent areas. (d) Chemical reactions can take place in translucent areas.

Last Answer : Chemical reactions can take place in exposed areas

Unit of flux density in magnetic circuits is ______________.

Description : Unit of flux density in magnetic circuits is ______________. A. Tesla B. dB C. Weber D. Hz 

Last Answer : Unit of flux density in magnetic circuits is Weber.

The supply both to field and armature circuits are disconnected simultaneously in a separately excited dc...

Description : The supply both to field and armature circuits are disconnected simultaneously in a separately excited dc motor and it comes to a standstill in 5 sec. If the armature circuit of this motor is disconnected from supply with field ... rest in (1) 5 sec (2) 7 sec (3) 4 sec (4) A very long time  

Last Answer : 5 sec only.standstill time doesn't depend upon field excitation

An air gap is usually inserted in magnetic circuits to?

Description : An air gap is usually inserted in magnetic circuits to?

Last Answer : An air gap is usually inserted in magnetic circuits to prevent saturation.

In AC. circuits, laminated iron is invariably used in order to?

Description : In AC. circuits, laminated iron is invariably used in order to?

Last Answer : In AC. circuits, laminated iron is invariably used in order to reduce eddy current loss.

does ohm's law apply to ac circuits?

Description : does ohm's law apply to ac circuits?

Last Answer : Yes it does, but as it is supplied with ac we will have to take impedance in account.

Which of the following statements is not valid in case of conductors in electrostatic fields?

Description : Which of the following statements is not valid in case of conductors in electrostatic fields? A) The static electric field intensity inside a conductor is zero B) The static electric field intensity at ... the surface C) The conductor surface is an equivalent potential surface D) None of the above

Last Answer : Which of the following statements is not valid in case of conductors in electrostatic fields? A) The static electric field intensity inside a conductor is zero B) The static electric field intensity at ... the surface C) The conductor surface is an equivalent potential surface D) None of the above

In induction type directional over current relay the driving torque is due to interaction of magnetic fields

Description : In induction type directional over current relay the driving torque is due to interaction of magnetic fields derived from (A) current in the potential coil (B) both voltage and current in the ... (C) directional element and non-directional element (D) non-directional element and the trip circuit

Last Answer : In induction type directional over current relay the driving torque is due to interaction of magnetic fields derived from directional element and non-directional element