Explain frequency domain synthesis. Which techniques fall into the category of frequency domain synthesis?

asked Mar 2, 2018 by anonymous

Explain frequency domain synthesis. Which techniques fall into the category of frequency domain synthesis?

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asked Aug 9, 2017 by anonymous

Time Domain Reflectometry (TDR)

Time Domain Reflectometry (TDR)

Last answer: Time Domain Reflectometry (TDR) TDR is a application of pulse technique and it is a echo technique. In this technique we observe and analyses the reflected ... determine the length of the transmission line. This is easy and inexpensive technique.

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asked Sep 22, 2018 by anonymous

Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses.

Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses.

Last answer: Energy conservation techniques to reduce commercial losses: 1. Mitigation of Power Theft: Power theft being the most important issue which all of the service providing utilities ... agricultural sector. Prepaid meters may prove effective measures against unauthorized abstraction of energy.

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68 views 1 answer

asked Mar 11, 2018 by anonymous

Explain the sinusoidal harmonic reduction techniques for cylcoconverters.

Explain the sinusoidal harmonic reduction techniques for cylcoconverters.

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54 views 0 answers

asked Sep 22, 2018 by anonymous

Explain any two energy conservation techniques in fan.

Explain any two energy conservation techniques in fan.

Last answer: Following are energy conservation techniques in Fans : 1) Use the electronic regulators instead of conventional regulator: Function of regulator is to control the speed of the fan. The conventional regulators ... 't forget to properly maintain your electric fan and keep it in good working order.

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asked Mar 10, 2018 by anonymous

Explain different gate drives techniques with base circuits and key features.

Explain different gate drives techniques with base circuits and key features.

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541 views 0 answers

asked Apr 26, 2018 by anonymous

In a 741 Op-Amp, there is 20 dB/decade fall-off starting at a relatively low frequency. This is due to the

In a 741 Op-Amp, there is 20 dB/decade fall-off starting at a relatively low frequency. This is due to the (A) applied load (B) internal compensation (C) impedance of the source (D) power dissipation in the chip

Last answer: In a 741 Op-Amp, there is 20 dB/decade fall-off starting at a relatively low frequency. This is due to the internal compensation

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98 views 1 answer

asked Sep 6, 2018 by anonymous

Draw the diagram and explain the working of ferrodynamic type frequency meter.

Draw the diagram and explain the working of ferrodynamic type frequency meter.

Last answer: Ferrodynamic type frequency meter: (Electrical resonance type frequency meter): It consists of a fixed coil. The supply whose frequency is to be measured is connected across it. This coil ... so selected that the moving coil takes up a convenient position when frequency is of normal value.

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asked Sep 5, 2018 by anonymous

Explain working of Weston type frequency meter.

Explain working of Weston type frequency meter.

Last answer: Weston Type Frequency Meter: There are two fixed coils marked as A and B. Each coil divided into two equal parts and are fixed such that their magnetic axis are perpendicular to each ... leading to deflections in either direction depending on the currents there in, due to changed impedances.

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3.2k views 2 answers

asked Mar 20, 2018 by anonymous

The maximum constant load torque under which a synchronous motor will pull into synchronism...

The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as?

Last answer: The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-in torque.

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218 views 1 answer

asked Jun 18, 2018 by anonymous

Which of the following thyristors can be used for high frequency of operation?

Which of the following thyristors can be used for high frequency of operation? A) TRIAC B) DIAC C) SCR D) GTO

Last answer: Which of the following thyristors can be used for high frequency of operation? A) TRIAC B) DIAC C) SCR D) GTO

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81 views 1 answer

asked Apr 29, 2018 by anonymous

What is the frequency of an alternator which has 2 poles and makes 3600 revolutions per minute?

What is the frequency of an alternator which has 2 poles and makes 3600 revolutions per minute? A) 3600 HZ B) 60 Hz C) 120 Hz D) None of these

Last answer: What is the frequency of an alternator which has 2 poles and makes 3600 revolutions per minute? A) 3600 HZ B) 60 Hz C) 120 Hz D) None of these

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2.5k views 1 answer

asked Sep 5, 2018 by anonymous

List two types of oscillator, which generates frequency in RF range.

List two types of oscillator, which generates frequency in RF range.

Last answer: Types of Oscillators generating frequencies in RF range: i) Hartley Oscillator ii) Colpitt’s Oscillator iii) Clapp Oscillator

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47 views 1 answer

asked Apr 28, 2018 by anonymous

The device which allows reverse power flow and withstands highest switch frequency is

The device which allows reverse power flow and withstands highest switch frequency is (A) GTO (B) MOSFET (C) IGBT (D) Inverter grade SCR

Last answer: The device which allows reverse power flow and withstands highest switch frequency is MOSFET

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60 views 1 answer

asked Mar 15, 2018 by anonymous

Which capacitor is used for high frequency?

Which capacitor is used for high frequency?

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67 views 0 answers

asked Sep 6, 2018 by anonymous

List the different types of frequency meters.

List the different types of frequency meters.

Last answer: Different types of frequency meters 1. Reed type [Mechanical type] 2. Ferro-dynamic type [Resonances type] 3. Weston type 4. Ratio-meter type 5. Saturable core type 6. Digital type

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47 views 1 answer

asked Sep 5, 2018 by anonymous

State the application of phase sequence indicator; clip on ammeter, frequency meter & P.F. meter.

State the application of phase sequence indicator; clip on ammeter, frequency meter & P.F. meter.

Last answer: Phase Sequence Indicator: 1. For finding correct phase sequence of supply 2. For obtaining exact instant of parallel operation of alternators. 3. For obtaining reversal of rotation ... 4. In electroplating industries 5. In various processes industries for measuring power factor

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115 views 1 answer

asked Sep 5, 2018 by anonymous

State the need of multistage amplifier. Draw frequency response of R-C coupled amplifier.

State the need of multistage amplifier. Draw frequency response of R-C coupled amplifier.

Last answer: The need of multistage amplifier The voltage (or power) gain, obtained from a single stage small signal amplifier, is limited. Therefore, it is not sufficient for all practical applications. Therefore, in ... to use a MULTISTAGE AMPLIFIER . Frequency response of R-C coupled amplifier.

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103 views 1 answer

asked Jun 18, 2018 by anonymous

A pulse radar has a pulse repetition frequency (PRF) of 3 KHz. If the radar is emitting at 10 GHz, what is the

A pulse radar has a pulse repetition frequency (PRF) of 3 KHz. If the radar is emitting at 10 GHz, what is the maximum unambiguous range for this radar? A) 5 Km B) 5 m C) 50 Km D) 15 m

Last answer: A pulse radar has a pulse repetition frequency (PRF) of 3 KHz. If the radar is emitting at 10 GHz, what is the maximum unambiguous range for this radar? A) 5 Km B) 5 m C) 50 Km D) 15 m

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119 views 1 answer

asked Jun 18, 2018 by anonymous

The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse

The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

Last answer: The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

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531 views 1 answer

asked Jun 18, 2018 by anonymous

What is the frequency range of VHF electromagnetic waves?

What is the frequency range of VHF electromagnetic waves? A) 30-300 kHz B) 30-3000 kHz C) 30-300 MHz D) 30-3000 MHz

Last answer: What is the frequency range of VHF electromagnetic waves? A) 30-300 kHz B) 30-3000 kHz C) 30-300 MHz D) 30-3000 MHz

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394 views 1 answer

asked Jun 18, 2018 by anonymous

The SCR would be turned OFF by voltage reversal of applied anode-cathode ac supply frequency of

The SCR would be turned OFF by voltage reversal of applied anode-cathode ac supply frequency of A) 10 kHz B) 10 Hz C) 5 kHz D) 5 Hz

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154 views 0 answers

asked May 8, 2018 by anonymous

A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are

A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are doubled, the new resonant frequency is

Last answer: A series R-L-C Circuit has a resonant frequency of 1000 Hz. If the values of R, L and C are doubled, the new resonant frequency is 500 Hz

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154 views 1 answer

asked May 1, 2018 by anonymous

The speed of a three-phase induction motor is controlled by variable voltage variable frequency control

The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque (1) Decreases (2) Increases (3) Remains constant (4) None of the above

Last answer: The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque Increases

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121 views 1 answer

asked Apr 29, 2018 by anonymous

What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased?

What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased? A) It increases B) It decreases C) It remains the same D) Cannot say unless the actual percentage increase in the frequency is known

Last answer: What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased? A) It increases B) It decreases C) It remains the same D) Cannot say unless the actual percentage increase in the frequency is known

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73 views 1 answer

asked Apr 28, 2018 by anonymous

The time period of third harmonic of power supply frequency, in milliseconds, is

The time period of third harmonic of power supply frequency, in milliseconds, is (A) 20 (B) 3.33 (C) 6.66 (D) 60

Last answer: The time period of third harmonic of power supply frequency, in milliseconds, is 6.66

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482 views 1 answer

asked Apr 26, 2018 by anonymous

Two waves have frequency of 500 Hz. One is set at its maximum value whereas the other at zero. The phase

Two waves have frequency of 500 Hz. One is set at its maximum value whereas the other at zero. The phase angle between them will be

Last answer: Two waves have frequency of 500 Hz. One is set at its maximum value whereas the other at zero. The phase angle between them will be 90o

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182 views 1 answer

asked Apr 26, 2018 by anonymous

An accelerometer has input range of 0 to 10g, natural frequency 30 Hz and mass 0.001 kg. The range of the

An accelerometer has input range of 0 to 10g, natural frequency 30 Hz and mass 0.001 kg. The range of the secondary displacement transducer in mm required to cover the input range is (A) 0 to 2.76 (B) 0 to 9.81 (C) 0 to 11.20 (D) 0 to 52.10

Last answer: An accelerometer has input range of 0 to 10g, natural frequency 30 Hz and mass 0.001 kg. The range of the secondary displacement transducer in mm required to cover the input range is 0 to 2.76

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58 views 1 answer

asked Mar 25, 2018 by anonymous

The frequency of an alternating current is?

The frequency of an alternating current is?

Last answer: The frequency of an alternating current is the number of waves passing through a point in one second.

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77 views 1 answer

asked Mar 25, 2018 by anonymous

The effective resistance of an iron-cored choke working on ordinary supply frequency...

The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of?

Last answer: The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of iron loss in core.

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124 views 1 answer

asked Mar 25, 2018 by anonymous

In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of?

In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of?

Last answer: In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of L or C.

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610 views 1 answer

asked Mar 24, 2018 by anonymous

For a frequency of 200 Hz, the time period will be?

For a frequency of 200 Hz, the time period will be?

Last answer: For a frequency of 200 Hz, the time period will be 0.005 s.

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102 views 1 answer

asked Mar 24, 2018 by anonymous

Two waves of the same frequency have opposite phase when the phase angle between them is?

Two waves of the same frequency have opposite phase when the phase angle between them is?

Last answer: Two waves of the same frequency have opposite phase when the phase angle between them is 180°.

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191 views 1 answer

asked Mar 21, 2018 by anonymous

In a Weston frequency meter, the magnetic axes of the two fixed coils are?

Last answer: In a Weston frequency meter, the magnetic axes of the two fixed coils are perpendicular.

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74 views 1 answer

asked Mar 21, 2018 by anonymous

In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of?

Last answer: In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of 0.5 Hz.

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177 views 1 answer

asked Mar 19, 2018 by anonymous

For given applied voltage, with the increase in frequency of the applied voltage?

For given applied voltage, with the increase in frequency of the applied voltage?

Last answer: For given applied voltage, with the increase in frequency of the applied voltage eddy current loss will remain unchanged.

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182 views 1 answer

asked Mar 18, 2018 by anonymous

Is the speed of alternator is directly proportional to frequency?

Is the speed of alternator is directly proportional to frequency?

Last answer: Yes, speed of alternator is directly proportional to frequency.

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79 views 1 answer

asked Mar 10, 2018 by anonymous

What is the frequency response of a circuit?

What is the frequency response of a circuit?

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91 views 0 answers

asked Feb 3, 2018 by anonymous

Operating frequency of power MOSFET is higher than that of power BJT. Justify the statement.

Operating frequency of power MOSFET is higher than that of power BJT. Justify the statement.

Last answer: Power MOSFET have high turning on and turning off capability high switching speed of MOSFET is due to the high rate of change of drain voltage. The switching losses of power MOSFET ... lower frequency. Hence, operating frequency of power MOSFET is higher than that of power BJT.

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701 views 1 answer

asked Sep 20, 2017 by anonymous

What is the unit of frequency?

Last answer: Unit of frequency is herzt

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55 views 2 answers

asked Aug 21, 2019 by anonymous

Principal of digital frequency meter.

Principal of digital frequency meter.

Last answer: The basic block diagram of basic digital frequency meter (DFM) is shown in above figure. The signal whose frequency we have to be measured is first to be amplified through amplifier. The output of amplifier ... = Number of counts. t = Time interval between start and stop condition of the gate.

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97 views 2 answers

asked Apr 30, 2018 by anonymous

For measurement of radio frequency ac signals __________ type meter is used

For measurement of radio frequency ac signals __________ type meter is used

Last answer: For measurement of radio frequency ac signals thermo-couple type meter is used

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121 views 1 answer

asked Apr 26, 2018 by anonymous

A 4 GHz carrier is amplitude modulated by a low-pass signal of maximum cut off frequency 1 MHz

A 4 GHz carrier is amplitude modulated by a low-pass signal of maximum cut off frequency 1 MHz. lf this signal is to be ideally sampled, the minimum sampling frequency should be nearly

Last answer: A 4 GHz carrier is amplitude modulated by a low-pass signal of maximum cut off frequency 1 MHz. lf this signal is to be ideally sampled, the minimum sampling frequency should be nearly 4 Ghz

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102 views 1 answer

asked Mar 24, 2018 by anonymous

A sine wave has a frequency of 50 Hz. Its angular frequency is _______ radian/second.

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

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321 views 1 answer

asked Mar 10, 2018 by anonymous

What do you mean by frequency response of an amplifier?

What do you mean by frequency response of an amplifier?

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77 views 0 answers

asked Aug 9, 2017 by anonymous

Advantages of Variable Frequency Drive (VFD)

Advantages of Variable Frequency Drive (VFD)

Last answer: Advantages of Variable Frequency Drive (VFD)

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74 views 2 answers

asked May 19, 2020 by anonymous

State the frequency and amplitude for both the voltage waveforms.

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42 views 0 answers

asked Aug 4, 2019 by anonymous

Define the following terms: 1) Virtual height 2) Actual height 3) Critical frequency. 4) Maximum usable frequency.

Define the following terms: 1) Virtual height 2) Actual height 3) Critical frequency. 4) Maximum usable frequency.

Last answer: 1) Virtual height:- The incident and refracted rays follow paths that are exactly the same as they have been if reflection had taken place from a surface located at a greater height, called ... angle of incidence is other than the normal is known as maximum unstable frequency. MUF= fc secθ

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56 views 1 answer

asked Aug 30, 2018 by anonymous

Classify the transformers based on the construction, frequency and power.

Classify the transformers based on the construction, frequency and power.

Last answer: Classification of Transformer Based On: i) Construction: Shell type, Core type, Berry type ii) Change in voltage level: Step-Up, Step-Down, iii) Number of phases: Single phase, Three phase iv) ... Control vi) Cooling: Self-cooled, Air-cooled, Forced-air cooled, Oil-cooled, Forced-oil cooled.

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105 views 1 answer

asked May 8, 2018 by anonymous

In a series R-C circuit, with the increase in frequency, current

In a series R-C circuit, with the increase in frequency, current (A) Reduces (B) Increases (C) Does not change (D) Becomes zero

Last answer: In a series R-C circuit, with the increase in frequency, current Increases

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74 views 1 answer

asked Apr 29, 2018 by anonymous

In a series RLC high Q circuit, the current peaks at a frequency

In a series RLC high Q circuit, the current peaks at a frequency (1) equal to the resonant frequency (2) greater than the resonant frequency (3) less than the resonant frequency (4) equal to half the resonant frequency

Last answer: In a series RLC high Q circuit, the current peaks at a frequency equal to the resonant frequency

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233 views 1 answer

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