Description : Klystron operation is based on the principle of a) Velocity modulation b) Amplitude modulation c) frequency modulation d) Phase modulation
Last Answer : Klystron operation is based on the principle of Velocity modulation
Description : Explain the working and principle of LVDT.
Last Answer : LVDT: Principle: The differential voltage of two secondary windings of a transformer is varied by positioning the iron core through an externally applied force. Working When the pressure ... upon the position of the core which in turn depends upon the pressure fed inside the bellows.
Description : Sketch and describe the working principle of LVDT.
Last Answer : Diagram Explaintion: LVDT is the example of inductive transducer, in LVDT any physical displacement of the core cause the voltage of any secondary winding to increase while simultaneously reducing the ... winding and core varies the coupling between it and two secondary windings. .:E0=E1-E2
Description : State the working principle and specification of LVDT
Last Answer : Diagram: A Linear Variable Differential Transformer (RLVDT) is an electromechanical transducer that provides a variable alternating current (AC) output voltage that is linearly proportional to the ... a secondary transducer it can be used as device to measure force, weight and pressure
Description : The operation of the fiber-optic cable is based on the principle of a. Refraction b. Reflection c. Dispersion d. Absorption
Last Answer : b. Reflection
Description : Operation of McLeod gauge used for low pressure measurement is based on the principle of (A) Gas law (B) Boyle's law (C) Charles law
Last Answer : Answer: Option B
Description : The underlying principle of operation of the parametric amplifier is based on what property?
Last Answer : Reactance.
Description : The operation of a fiber-optic cable is based on the principle of ∙ A. refraction ∙ B. reflection ∙ C. dispersion ∙ D. absorption
Last Answer : A. refraction
Description : The operation of the fiber-optic cable is based on the principle of ∙ a. Refraction ∙ b. Reflection ∙ c. Dispersion ∙ d. Absorption
Last Answer : ∙ b. Reflection
Description : Explain the principle of operation of solenoid. State two parameters on which selection of solenoid is based.
Last Answer : Diagram : Principle: A solenoid is a simple electromagnetic device that converts electrical energy directly into linear mechanical motion, but it has a very short stroke (length of movement), ... Parameters on which selection of solenoid is based1. Size 2. Flow capacity 3. Applied Voltage
Description : The operation of a ramp type Digital Voltmeter is based on the principle of (A) Voltage-to-current conversion. (B) Voltage-to-time conversion. (C) Current-to-time conversion. (D) Current-to-frequency conversion.
Last Answer : The operation of a ramp type Digital Voltmeter is based on the principle of Voltage-to-time conversion.
Last Answer : The principle of operation of Q-meter is based on Series resonance.
Description : What is residual voltage of lvdt?
Last Answer : Need answer
Description : LVDT used for displacement measurement is a/an __________ transducer. (A) Passive (B) Active (C) Capacitive (D) None of these
Last Answer : (A) Passive
Description : Drawand explain LVDT accelerometer.
Last Answer : Diagram: Explanation: The LVDT accelerometer consists of one primary and two secondary windings which are placed on either side of central code. The two ends of the core ... arises in the output terminal. This output voltage is directly proportional to the vibration or acceleration.
Description : Give one application each of following transducer: (i) LVDT (ii) RVDT (iii) Capacitive (iv) Piezoelectric
Last Answer : i) LVDT ➢ LVDT used to measure force ➢ LVDT used to measure strain ➢ LVDT used to measure weight ➢ LVDT used to measure tension ➢ LVDT used to measure pressure ➢ The ... flow meters, non-destructive test (NDT) equipment's ➢ Piezoelectric materials are used in ultrasonic transducers.
Description : Sketch and describe pressure measurement system for 800 mm pressure, that contain Bourdon tube and LVDT.
Last Answer : Diagram: Explanation: The pressure measurement using bourdon tube and LVDT is shown in above figure. In this the, the bourdon tube act as primary transducer and LVDT which follows ... This set up is used for measurement of pressure which is converted into electrical signal by LVDT.
Description : Draw and describe the constructional diagram of LVDT.
Last Answer : Construction of LVDT: A differential transducer consists of a primary winding and two secondary winding. The windings are arranged concentrically and next to each other. They are wound over a ... winding and core varies the coupling between it and two secondary windings. E0=E1-E2
Description : Draw Bourdon tube with LVDT setup for pressure measurement.
Last Answer : Bourdon tube with LVDT setup for pressure measurement.
Description : Explain the construction and working of LVDT accelerometer with the help of diagram.
Last Answer : Explanation:* The LVDT accelerometer consists of one primary and two secondary windings which are placed on either side of central code. The two ends of the core are connected with ... in the output terminal. This output voltage is directly proportional to the vibration or acceleration.
Description : Explain why LVDT gives a residual output at null position. State its 2 applications.
Last Answer : LVDT : Residual voltage may be on account of I/P supply voltage and also due to harmonics produced in the o/p voltage on account of use of iron core. OR An incomplete magnetic ... pressure is converted into a voltage. In these applications the high sensitivity of LVDTs is a major attraction.
Description : Draw and explain the displacement measurement system using LVDT.
Last Answer : (Or) LVDT has a single primary winding P and two secondary windings S1 and S2 wound on a cylindrical former. S1 and S2 have equal number of turns and are ... while simultaneously reducing the voltage in the other winding. Output voltage Vo measured is equivalent to the displacement.
Description : List any four drawbacks of LVDT.
Last Answer : Drawbacks of LVDT. 1. Large primary voltage produces distortion in output. 2. Temperature affects the performance. 3. Sensitive to stray magnetic field. 4. Large displacements are required for differential output 5. It has residual voltage
Description : Draw construction diagram of LVDT with label. Also state the application of LVDT.
Last Answer : Application of LVDT 1) L.V.D.T as a primary transducer can be used for displacement measurement ranging from fraction of a mm to a few cm 2) Acting an secondary transducer, used to measure force, weight and pressure.
Description : Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell Which of the above are active transducers ?
Last Answer : Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell Which of the above are active transducers ? 2, 3 and 4
Description : Which is not the disadvantage of LVDT? a) Relatively large displacement are required for appreciable differential output b) temperature affects the performances of transducer c) low hysteresis and ... limited mechanically by the mass of the core and electrically by the frequency of applied voltage
Last Answer : low hysteresis and electrical isolation
Description : LVDT is a: (1) Displacement transducer (3) Acceleration transducer (2) Velocity transducer (4) Pressure transducer
Last Answer : LVDT is a: Displacement transducer.
Description : Which operation is used to shift the content of an operand to one or more bits to provide necessary variation: a. Logical and bit manipulation b. Shift manipulation c. Circular manipulation d. None of these
Last Answer : b. Shift manipulation
Description : . A variation of an original thought experiment in ethics and moral philosophy goes thus: A surgeon has five patients each in need of a different organ, but unfortunately no organ is available. ... word name is the original problem, first proposed by Phillipa Foot and involving a driver, famous?
Last Answer : Trolley Problem.
Last Answer : Electrostatic instrument uses the principle of the variation of Capacitance with the voltage.
Description : What is PLL? Explain its operation with a block diagram.
Last Answer : PLL - A phase-locked loop or phase lock loop is a control system that generates an output signal whose phase is related to the phase of an input signal Block diagram ... to the input frequency. The phase - locked loop goes through three states free running capture and phase lock.
Description : Draw & explain operation of phase detector.
Last Answer : In phase detector, the op-Amp basically acts as a zero crossing detector. If a sine wave is applied at the i/p, we get square wave at the op-Amp o/p (at point ... to two channel of the CRO. The time duration between the pulses corresponding to voltages represent the phase between them.
Description : The condition for parallel operation of two inverters is • Amplitude of voltages should be same. • Frequency of voltages should be same. • Both the voltages should be in same phase. • All the three above.
Last Answer : The condition for parallel operation of two inverters is • Amplitude of voltages should be same. • Frequency of voltages should be same. • Both the voltages should be in same phase. • All the three above.
Description : The operation of a JFET involves (A) A flow of minority carriers (B) a flow 0f majority carriers (C) recombination (D) negative resistance
Last Answer : The operation of a JFET involves a flow 0f majority carriers
Description : Which of the following diodes is limited to the reverse-bias region in its region of operation? (1) Schottky (2) Tunnel (3) Photodiode (4) Rectifier
Last Answer : Photodiode is limited to the reverse-bias region in its region of operation.
Last Answer : Superhetrodyne principle provides selectivity at IF stages
Last Answer : The principle of emission of electrons from a metal surface, under the influence of light is known as Photo electric emission.
Description : What is the principle employed in the operation of an artificial kidney?
Last Answer : Dialyisis
Description : The fundamental scientific principle in the operation of battery is – (1) acid-base interaction (2) dialysis (3) dissociation of electrolytes (4) oxidation-reduction
Last Answer : (3) dissociation of electrolytes Explanation: The electrolyte consists of a solvent (water, an organic liquid, or even a solid) and one or more chemicals that dissociate into ions in the solvent. These ... that contains ions and can be decomposed by electrolysis, e.g., that present in a battery.
Description : What Is Basic Principle Of Operation Of Alternators/dc Generators?
Last Answer : They are working on the fundamental principle based on Faraday’s Laws of Electromagnetic Induction. This law states that, When a current carrying conductor moves in magnetic field, it induces an EMF.
Description : What is the principle of operation of shaded-pole induction motor?
Last Answer : A shaded-pole motor is basically a small single-phase squirrel cage motor in which the starting winding is composed of short-circuited copper ring (called shading coil) surrounding one-third of each pole ... rotating magnetic field. As a result, the rotor is set in motion due to induction principle.
Description : Explain in brief the principle of operation of successive Approximation ADC.
Last Answer : The circuit of successive approximation ADC consists of a successive approximation register (SAR), to find the required value of each bit by trial & error.With the arrival of START command, SAR sets the MSB ... /P signal. This O/P is low or High. This process continues until all bits are checked.
Description : Explain the principle of operation of attracted armature relay with equation and characteristics curve.
Last Answer : Principle: It works on the principle that when a current is passed through a coil magnetic lines of force develop and the coil behaves like a magnet. When we place a magnetic material inside the coil it is ... ) time delay. If we want a time delay we can add a slug in the armature core.
Description : Comment on the working principle of operation of a single-phase transformer.
Last Answer : Working principle of operation of a single-phase transformer can be explained as An AC supply passes through the primary winding, a current will start flowing in the primary winding. As ... is known as mutually induced voltage. Hence, transformer works on the principle of electromagnetic induction.
Description : What is the basic principle of operation of a klystron?
Last Answer : Velocity modulation
Description : Draw block diagram of frequency meter and state it’s principle of operation
Last Answer : Block diagram Principle The signal may be amplified before being applied to the Schmitt trigger. The Schmitt trigger converts the input signal into a square wave with fast rise and fall times, ... time interval between start and stop gate then, frequency of unknown signalis, f = N / t
Description : The fundamental scientific principle in the operation of battery is (1) acid-base interaction (2) dialysis (3) dissociation of electrolytes (4) oxidation-reduction
Last Answer : dissociation of electrolytes
Description : State the principle of operation of the gear box in terms of Torque, speed and diameter of the gear.
Last Answer : In a gear box, the counter shaft is mashed to the clutch with a use of a couple of gear. So the counter shaft is always in running condition. When the counter shaft is bring ... lubricant. This prevents excessive wear and early failure. Therefore a gearbox runs partially filled with lubricant oil.
Description : Describe with block diagram; the principle of operation of digital storage oscilloscope.
Last Answer : The block diagram of DSO is shown above. Sampling rate may be as high as 1,00,000 samples per sencod. For such high sampling rates, a fast conversion ADC is requried. Flash ADC ... particular signal in the memory then overwritting should be stopped.This obtained by using Hold and Save button.
Description : State the principle of operation of d.c. motor.
Last Answer : When a current carrying conductor is placed in a magnetic field, the conductor experiences the force. The magnitude of force is given by F = BIL newton where F – Force B – maximum flux density I – Current L – Length of conductor