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Answer :

Wave trap is used to trap waves of higher frequencies entering generator or transformer units.

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Description : Wave trap is used to trap waves of:  (A) Power frequencies (B) Higher frequencies entering generator or transformer units (C) All of the above (D) None of the above

Last Answer : Wave trap is used to trap waves of: Higher frequencies entering generator or transformer units

Description : Explain Briefly The Trap Input For The 8085.?

Last Answer : Answer :The TRAP input is sensitive to both edge and level. The pulse width for this signal should be in excess as compared to the normal noise width. A second trap will never be able to ... to low transition. The pulse widths are wider than normal widths so as to prevent unwanted false triggers.

Description : How to Set a Mouse Trap

Last Answer : How to Set a Mouse Trap Are mice a problem in your home? Mouse traps remain one of the most effective ways of catching them and getting rid of them. Learn how to use and set them perfectly. When ... has a trap, and may learn to avoid it. Moving the trap around will help keep the trap effective.

Description : How to Build a Mouse Trap Car

Last Answer : How to Build a Mouse Trap Car Introduction Toy cars can be a lot of fun to build, but most of them involve the use of some hard-to-come-by materials and tools that can be difficult to use. Not so ... face, so check out these tricks on getting rid of gnats, to drive them away from your home as well.

Description : How to Build a Crab Trap

Last Answer : How to Build a Crab Trap A delicious plate of crabs is delightful and mouthwatering, but the problem is, it can be very expensive. There's one solution to this though: catch them yourself. As long as ... like, as long as you have a well-functional crab trap. Follow these steps, and enjoy your catch!

Description : In 8085, whenever a signal is received at TRAP terminal, its program execution is transferred to a subroutine on address A) 0000 H B) 002C H C) 0024 H D) 0004 H

Last Answer : In 8085, whenever a signal is received at TRAP terminal, its program execution is transferred to a subroutine on address 0024 H

Last Answer : When a transmission line is energized, the wave that propagates on it is current wave and voltage wave.

Description : How To Make A Wave Bottle

Last Answer : Students will observe water moving in waves. Materials: A 1 liter plastic bottle for each student. Vegetable oil Food coloring Water Paper Pencils Instructions: Give each student a plastic bottle. Ask ... effect waves such as the ocean floor, sandbars, rocky coasts and, of course, the moon.

Description : How to Stay Cool in a Heat Wave

Last Answer : How to Stay Cool in a Heat Wave A heat wave may last for a few days to a few weeks and may happen with extreme humidity. Though you can't prevent heat waves, there are things you can do to ... your home. There are a lot of alternatives you can do to keep your home and your family heatwave safe.

Description : How does Wave Energy Work?

Last Answer : How does Wave Energy Work? There has been a major shift in thinking all around the world on what types of energy we should use. Unfortunately, the world currently runs on fossil fuels such as oil and ... attractive in the next couple of decades. This should lead to a spur in their wide scale use.

Description : Draw single phase full wave mid-point converter for inductive load. Draw input and output waveforms for it. 

Last Answer : Circuit Diagram: Waveforms:

Description : operation of half wave rectifier type AC Voltmeter.

Last Answer :  Half-wave Rectifier Voltmeter The d'Arsonval meter movement only responds to the average or dc value of the current through the moving coil. In order to measure alternating ... ) input voltage signal alternating signal needs to be rectified first by using diode rectifier to produce 

Description : State the concept of continuous wave RADAR. Sketch its block diagram. State its any two applications.

Last Answer : Concept- Transmission is continuous here, the circulator is used to provide isolation between the transmitter and the receiver. Since transmission is continuous, it would be pointless to use a ... It is used to measurement of relative velocity to distinguish moving target from stationary objects 

Description : State advantages and disadvantages of continuous wave Radar

Last Answer : Advantages continuous wave RADAR : 1.Single frequency transmission and hence narrow receiver bandwidth 2.Duty cycle is unity, so mean power can be as high as transmitters will permits. 3.Ability ... required for receiver and transmitter. 3.Cannot detect targets crossing its beam at right angles.

Description : Justify electromagnetic wave is said to be transverse wave. 

Last Answer : Transverse electromagnetic wave:- The electromagnetic waves are oscillations which propagate through free space. In electromagnetic waves the direction of electric field, magnetic field & propagation are ... electric field vector with respect to the surface (i.e. looking at the horizon) 

Description : Define : i) Average value ii) RMS value of an AC Wave.

Last Answer : i) Average value: The average value is defined as the average of all instantaneous values during one alternation . That is, the ratio of the sum of all considered instantaneous values to the ... as produced by the alternating current when flowing through the same resistance for the same time.

Description : Give the operation of single phase full wave bridge controlled converter with RL load with a neat diagram. Also draw its waveform.

Last Answer : Single phase fully control bridge converter with RL load: 1. During positive half cycle of input voltage, T1 and T2 are forward biased and during negative half cycle, T3 and T4 are forward biased. Therefore, T1-T2 ... cycle till the firing of next pair of SCRs as shown in the waveform.

Description : Draw a neat diagram of 1Ф half wave controlled converter with RL load. Give its operation.

Last Answer : Single phase fully controlled half wave converter:  The circuit diagram of single-phase half-wave controlled rectifier with RL load and without freewheeling diode is shown in Fig. (a). The SCR T is ... , when again pulse is applied, the SCR is turned on & the above cycle is repeated. 

Description : Instantaneous value of a sine wave voltage

Last Answer : Instantaneous value of a sine wave voltage

Description : Draw a labeled block diagram of sine wave generator and state function of each block. 

Last Answer : Function Generator:  This instrument can deliver sine, triangular & square waves with frequency range of 0.01 Hz to 100 kHz.  The frequency control network is governed by a frequency ... voltage reaches a predetermined level on the negative slope of the integrator's output voltage.

Description : Explain full wave bridged rectifier with the help of circuit diagram and input output waveform.

Last Answer : 1. In positive half cycle (0 to Π): The end A of the secondary winding becomes positive and end B negative. This makes diode D1 and D4 forward biased while diode D2 and D3 are reverse biased. These two diodes will ... D2 and D3 when it is conducting is as follows.  B - D2 - RL - D3 - A 

Description : The coefficient of reflection for current wave is

Last Answer : The coefficient of reflection for current wave is 1 or -1

Description : The velocity of travelling wave through a cable of relative permittivity 36 is

Last Answer : The velocity of travelling wave through a cable of relative permittivity 36 is 0.5 x 108 m/sec

Description : The fractional-pitch used for eliminating 7th harmonic from the emf wave of an alternator is (A) 2/3 (B) 5/6 (C) 7/8 (D) 6/7

Last Answer : The fractional-pitch used for eliminating 7th harmonic from the emf wave of an alternator is 6/7

Description : The equation of 50 Hz current sine wave having r.m.s. value of 60 A is?

Last Answer : (60*√2)Sin(2π*50*t)

Description : Form factor for a sine wave is?

Last Answer : 1.11

Description : For a sine wave with peak value Imax the r.m.s. value is?

Last Answer : For a sine wave with peak value Imax the r.m.s. value is 0.707.

Last Answer : The period of a wave is time required to complete one cycle.

Last Answer :  A sine wave has a frequency of 50 Hz. Its angular frequency is 100 n radian/second.

Last Answer : Wave winding is composed of that even number which is exact multiple of poles + 2.

Description : Explain three phase half wave controller or three phase unidirectional controller.

Last Answer : Three phase half wave controller or unidirectional controller:

Description : Explain three phase full wave controller.

Last Answer : Three phase full wave controller: Three phase full wave controller is also called as the three-phase bidirectional controller. Let the load is star connected so at each phase there are antiparallel connected SCRs. ... conduct at the same time and the third phase will be open.

Description : Which countries are using wave energy?

Last Answer : The following countries are using wave energy :GreecePortugalUnited StatesUnited KingdomSpainIsraelSweden

Description : What are the advantages and disadvantages of wave energy?

Last Answer : AdvantagesFree from pollutionAvailable for every timeThe water can reuse as drinking purposeDisadvantageMore costLarge maintenanceDifficult to constructAquatic life get affected

Description : what is mean by sine wave?

Last Answer : Hi, Sine wave means it is the wave form of sinusoidal wave generally of voltage or current. It takes the path of positive & negative half cycles. 1 set of positive and negative half cycles is called 1 cycle. frequency is no. of cycles per second (HZ). Thanks K.Srikanth

Description : Light triggering is mainly used in

Last Answer : Light triggering is mainly used in High voltage direct current transmission

Description : A relay used for protection of motors against overload is :  (A) Impedance relay (B) Electromagnetic attraction type (C) Thermal relay (D) Buchholz's relay

Last Answer : D

Description : Earthing switch is used for?  (A) Measuring of safety voltage (B) Protection of equipment from ground faults (C) Discharging residual energies (D) All of the above 

Last Answer : Earthing switch is used for?  (A) Measuring of safety voltage (B) Protection of equipment from ground faults (C) Discharging residual energies (D) All of the above 

Description : Auto reclosing is used in case of

Last Answer : Auto reclosing is used in case of air blast C.B.

Description : A negative sequence relay is used for protection of  (1) Generator (3) Motor (2) Transformer (4) Long Transmission lines

Last Answer : A negative sequence relay is used for protection of Generator 

Description : The material used in liquid fuses is  (1) SF6 (3) carbon tetra chloride (2) distilled water (4) transformer oil

Last Answer : The material used in liquid fuses is  carbon tetra chloride

Description : IDMT relays are used to protect the transformer against :  (A) Internal short -circuits (B) Open circuits (C) External short circuits (D) Oil leakage

Last Answer : IDMT relays are used to protect the transformer against : External short circuits

Description : Series reactors are used to

Last Answer : Series reactors are used to bring down the fault level within the capacity of the switchgear

Description : ln a minimum oil circuit breaker the oil is used

Last Answer : ln a minimum oil circuit breaker the oil is used to act as circuit breaking medium only

Description : Regulating-transformers are used in power systems for control of

Last Answer : Regulating-transformers are used in power systems for control of power flow

Description : Surge absorbers are used for protection against

Last Answer : Surge absorbers are used for protection against low voltage high frequency oscillations

Last Answer : A switchgear is device used for switching, controlling and protecting the electrical circuit and equipment.

Last Answer : The material used for fuse must have low melting point and high specific resistance.

Last Answer : Series capacitors are used to compensate for line inductive reactance.