Explain working principle of stroboscope with neat sketch.

Explain working principle of stroboscope with neat sketch.
by
retagged

1 Answer

Answer :

Diagram :

image

Explanation : The arrangement of two flanges A and B placed at a distance on the shaft is as shown. Flange A carries a scale while flange a pointer. When a torque is applied on the shaft it causes angular displacement of pointer relative to the scale due to the angular twist. The deflection of the shaft may be read off directly when the shaft is stationery. However this is not possible if the shaft is rotating. In such cases, stroboscope is used. The flashing light of the stroboscope is applied onto the scale and the flashing frequency is adjusted till a stationery image is obtained. The scale reading can now be taken for measuring the angular twist. This method is simple and inexpensive. However, the accuracy of measurement is poor.

by

Related questions

State the working principle of solenoid valve with neat sketch

Description : State the working principle of solenoid valve with neat sketch

Last Answer : Principle of Operation: * A solenoid is used for translating ON/OFF electrical signals to ON/OFF mechanical movements and normally used as a linear actuator. * As shown in fig (b) above, ... * When the voltage is applied to the solenoid frame magnetic field is produced in the solenoid frame. 

Explain with sketch torque measurement using (i) Stroboscope method, (ii) Capacitive method.

Description : Explain with sketch torque measurement using (i) Stroboscope method, (ii) Capacitive method.

Last Answer : (i) Stroboscope method:-- Explanation : The arrangement of two flanges A and B placed at a distance on the shaft is as shown. Flange A carries a scale while flange a ... By applying a radiometric algorithm to the received signals, the signed relative angle between the rotors is calculated.

State and explain the working principle of hydrodynamic spring with neat sketch.

Description : State and explain the working principle of hydrodynamic spring with neat sketch.

Last Answer : Working principle: Hydrodynamic springs are comparatively small, thick walled cylinder in which the spring effect is produced by applying load to the fluid in the cylinder through a small ... These springs are particularly useful in applications requiring high load capacities and stiffness.  

With neat sketch explain the working principle of CNC machines.

Description : With neat sketch explain the working principle of CNC machines. 

Last Answer : Working Principle of CNC machine:- A CNC machine also has a tape reader or any other input media for entry of the part program. CNC uses the part program in a different manner though there is ... to the reference. These two signals are compared and necessary action is controlled.   Or  

Explain the working principle of resistance welding with neat sketch.

Description : Explain the working principle of resistance welding with neat sketch. 

Last Answer : Resistance Welding Process: 1.Resistance Spot welding:  Spot welding is employed to join overlapping strips, sheets or plates of metal at small areas. The pieces are assembled between two ... welding small parts. Butt Welding provides joining with no loss of the welded materials.  

Explain the working principle of MIG welding with neat sketch.

Description : Explain the working principle of MIG welding with neat sketch.

Last Answer : MIG Welding: Gas-metal-arc welding is a gas shielded metal arc welding process which uses the high heat of an electric arc between a continuously fed, consumable electrode wire and the material to be ... will not combine with metal. Carbon dioxide is most commonly used as it inexpensive.

Explain in detail principle, construction and working of Radiation Pyrometer with neat sketch.

Description : Explain in detail principle, construction and working of Radiation Pyrometer with neat sketch.

Last Answer : Radiation pyrometer Principle: According to Stefan Boltzmann's law, the intensity of radiant energy emitted by a hot target varies as the fourth power of its absolute temperature. ... is calibrated in terms of target temperature by using either a voltmeter or Wheatstone bridge circuit.

Draw neat sketch of Rotameter and explain its working principle.

Description : Draw neat sketch of Rotameter and explain its working principle.

Last Answer : Rotameter: - A variable-area flowmeter is one where the fluid must pass through a restriction whose area increases with flow rate. The height of the float is directly proportional to the flowrate ... on glass tube and the flow rate can be determined by direct observation of the metering tube  

Explain principle of working of Impulse steam turbine with neat sketch.

Description : Explain principle of working of Impulse steam turbine with neat sketch.

Last Answer : Construction: Impulse turbine is simpler, less expensive and does not need to be pressure proof. It can operate with any pressure stream but is considerably less efficient. Impulse turbine consist of one ... by one set of moving blade ring as shown in Fig. for a single stage impulse turbine.

Explain with neat sketch the construction and working principle of megger.

Description : Explain with neat sketch the construction and working principle of megger.

Last Answer : Megger: Construction of Megger : Two coils: the current coil and pressure coil are mounted at an angle on the same spindle and form the part of the moving system. These coils are ... force produces a torque that is used to deflect the pointer of the device which gives some reading.

Explain with neat sketch; the construction and working principle of Repulsion type moving iron instrument.

Description : Explain with neat sketch; the construction and working principle of Repulsion type moving iron instrument.

Last Answer : Repulsion Type Moving Iron Instrument: Construction: It consist of fixed cylinder hollow coil which carries operating current inside the coil there are two soft iron pieces. One of which is ... magnetized with same polarity a repulsive force act on them and moving iron piece gets deflected. 

Explain with neat sketch the working principle of MIG.

Description : Explain with neat sketch the working principle of MIG.

Last Answer : In metal-arc inert gas welding the Weld area is shielded by an effectively inert atmosphere of argon, helium, carbon dioxide, or various other gas mixtures . The consumable bare Wire is fed automatically ... of the molten-weld puddle. Multiple-weld layers can be deposited at the joint. 

State the working principle of Bellows pressure gauge with neat sketch.

Description : State the working principle of Bellows pressure gauge with neat sketch.

Last Answer : Bellows pressure gauge: Diagram: Principle: Bellows element is the elastic element which gets deflected at the free end when pressure is applied through fixed end. This free end deflection can be taken as the measure of pressure inside it.

Give construction working principle of RTD with a neat sketch.

Description : Give construction working principle of RTD with a neat sketch.

Last Answer : Diagram Working: An RTD (resistance temperature detector) is a temperature sensor that operates on the measurement principle that a material's electrical resistance changes with temperature. ... change m resistance of the RTD, which is then used to calculate change in temperature.

Describe with neat sketch the construction and working principle of MOSFET.

Description : Describe with neat sketch the construction and working principle of MOSFET.

Last Answer : Construction and working principle of MOSFET:  A) Depletion type MOSFET: Construction: The N-channel depletion type MOSFET is formed on P-type silicon substrate with two heavily ... accumulation of electrons and hence more current. Thus the MOSFET is a gate voltage controlled device.

With the help of neat sketch, state working principle of rotameter.

Description : With the help of neat sketch, state working principle of rotameter. 

Last Answer : Explanation- When there is no flow through the Rota meter, the float rest at the bottom of metering tube. When fluid enters the tube, the float moves up and the flow area increases. The float ... on the tube. With the help of float position and calibrated scale, we can measure the flow rate.

Explain microcontroller based antilock brake system with neat block diagram.

Description : Explain microcontroller based antilock brake system with neat block diagram.

Last Answer : An ABS is a system on motor vehicles which prevents the wheels from locking while braking stopping safely is one of the most important functions a motor vehicle can perform ... valves to decrease the pressure on the braking circuit, effectively reducing the braking force on that wheel.

List velocity sensors and explain any one type with neat diagram.

Description : List velocity sensors and explain any one type with neat diagram.

Last Answer : Different type of velocity sensors are:-- 1)Encoders 2)Tacho-generators 3)Pyroelectic sensors 4)Moving coil type  Explanation:-- A digital optical encoder is a device that converts motion into a ... e.m.f will be proportional to the input velocity and thus, is a measure of the velocity

Explain MEMs microactuator with neat diagram.

Description : Explain MEMs microactuator with neat diagram.

Last Answer : Explanation: * Actuator is a mechanical device used for controlling or moving something. * It is an element that converts electric signals into physical signals. * The transduction unit ... pumps, micro switches, micro valves and micro grippers are different types of Micro actuators. 

Explain the principle of techeometry with the help of a neat sketch.

Description : Explain the principle of techeometry with the help of a neat sketch.

Last Answer : Principle of tacheometry is based on principle of similar triangle in which corresponding sides & altitudes are proportional The ratio of distance of base from apex and length of base is always constant. ... S3=f/i=Constant Where f=focal length of objective and i =stadia intercept  

Describe with neat sketch, the optical square and explain its principle.

Description : Describe with neat sketch, the optical square and explain its principle.

Last Answer : Principal of optical square :- the angle between the first incident ray and the last reflected ray is twice the angle between the two mirrors OR If there are two plane mirrors whose reflecting surfaces ... is 450 while that between the first incident ray and last reflected ray is 900 .  

Explain principle of optical square with neat sketch.

Description : Explain principle of optical square with neat sketch.

Last Answer : Principle of optical square :- The angle between the first incident ray and the last reflected ray is twice the angle between the two mirrors In the case of optical square the angle between the mirrors is 45° while that between the first incident ray and last reflected ray is 90°.  

Explain 3-2-1 principle of location with neat sketch.

Description : Explain 3-2-1 principle of location with neat sketch.

Last Answer : 3-2-1 principle of location  It is also known as six pin or six point location principle. In this, the three adjacent locating surfaces of the blank (work piece) are resting against 3, 2 and 1 pins ... above method of locating a work piece in a fixture is called the 3-2-1 Principle  

Explain the principle of operation of solenoid. State two parameters on which selection of solenoid is based.

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

Describe the operating principle of PIN diode with neat sketch.

Description : Describe the operating principle of PIN diode with neat sketch.

Last Answer : Consider the structure of a PIN diode as shown in fig  A PIN diode operates under what is known as high-level injection.In other words,the intrinsic i region is flooded with charge ... results in faster operation of the diode,making it a suitable device for high frequency operations.

Draw a neat sketch of 1-ph induction type energy meter and write operating principle of it.

Description : Draw a neat sketch of 1-ph induction type energy meter and write operating principle of it. 

Last Answer : Operating Principal:- The disc is placed between the two-flux due to pressure coil and flux due to current coil, which will set up torque on the disc which is proportional to power causing the ... is proportional to voltage, the second carries a current coil so its flux is proportional to current.

Explain with a neat sketch the working of the apparatus used for distillation on laboratory scale.

Description : Explain with a neat sketch the working of the apparatus used for distillation on laboratory scale. 

Last Answer : There are two apparatus used for distillation on laboratory scale. 1. Simple apparatus. 2. Still apparatus. Simple apparatus: Working: 1. Water is filled in the round bottom flask. ... level device is fitted in such a way that only heated water free from gases enters the boiler. 

Explain working of Gobar Gas plant with a neat sketch.

Description : Explain working of Gobar Gas plant with a neat sketch.

Last Answer : It is a type of composting plant. In this plant gobar gas is produced from solid waste which is biodegradable in nature. A mixture of gases is produced by breakdown of organic matter in the absence of ... Dioxide. It is used as a fuel and the digested sludge is used as fertilizer for crops

Explain the working of Ackerman steering gear mechanism with neat sketch.

Description : Explain the working of Ackerman steering gear mechanism with neat sketch.

Last Answer : Working: The whole mechanism of Ackerman Steering gear is on the back of the front wheels. The Ackerman steering gear consists of turning pairs The slotted links AM and BH are attached ... each end. The steering is affected by moving CD to the right or left of its nominal position. 

Draw the neat sketch of overhead valve operating mechanism and explain its working.

Description : Draw the neat sketch of overhead valve operating mechanism and explain its working.

Last Answer : Overhead valve mechanism: Figure shows the valve mechanism to operate the valve when it is in the cylinder head (in I and F head design). This type of mechanism requires two additional moving parts the push ... close. A spring (attached to the valve) returns the valve to its seated position.   

Explain working of over head valve mechanism with neat sketch.

Description : Explain working of over head valve mechanism with neat sketch.

Last Answer : Overhead valve mechanism: Figure shows the valve mechanism to operate the valve when it is in the cylinder head (in I and F head design). This type of mechanism requires two additional moving parts the ... to close. A spring (attached to the valve) returns the valve to its seated position.  

Draw a neat lebelled sketch of optical square. Explain its working.

Description : Draw a neat lebelled sketch of optical square. Explain its working.

Last Answer : Working of optical square1. Optical square works on principle of optical square to set perpendicular offset 2. Keep ranging rods at point B and C as shown in fig. 3. Observe the ... matched each other point D can be marked on ground and distance CD is measured as perpendicular offset.

Draw a neat sketch of optical square. Explain its working.

Description : Draw a neat sketch of optical square. Explain its working.

Last Answer : Optical Square: Working: The optical square consists of circular box 50 mm in diameter, 12.5 mm in depth. The box has three slits as A,B, and C. bb' is horizon glass, half silvered i.e ... the point on the chain line where the offset can be dropped to meet point J as shown in fig.  

Explain the working of diesel engine glow plugs with neat sketch

Description : Explain the working of diesel engine glow plugs with neat sketch

Last Answer : Glow plug is an aid for cold starting of a C.I. engine. The self-ignition temperature of diesel is 250°C. For compression ignition, the charge (air + diesel) should reach a temperature of ... plugs is automatically interrupted. But starting may be attempted again as soon as the driver wishes.   

With the help of constructional diagram, explain the working of LDR with neat sketch.

Description : With the help of constructional diagram, explain the working of LDR with neat sketch.

Last Answer : Working Principle The resistance depends on the intensity of light, as resistance decreases with increase in light intensity. Characteristics Applications of LDR 1. They are often ... circuits, light intensity meters, for counting the packages moving on a conveyor belt, etc.

Explain the working principal of EDM with a neat sketch.

Description : Explain the working principal of EDM with a neat sketch. 

Last Answer : Let the distance between P and Q be D' which is to be measured. A wave is transmitted from the transmitter at station P' with certain phase angle. . There ... finding the distance, the phase difference between transmitted wave and reflected wave is measured and converted into distance.

Explain construction and working of Combination Die with neat sketch.

Description : Explain construction and working of Combination Die with neat sketch.

Last Answer : Combination Die: In this both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram. Figure shows a combination of blanking and drawing die.In this ... as blank holder when the drawing punch descends and draws the blank into the desired shape.

Explain construction and working of Bimetallic Thermometer with neat sketch.

Description : Explain construction and working of Bimetallic Thermometer with neat sketch.

Last Answer : Bimetallic thermometer: Diagram Construction and working: Bimetallic strip consists of two strips of metal such as invar and brass welded together, each strip made from a metal having a ... The movement of the bimetallic strip is utilized to deflect a pointer over a calibrated scale. 

Explain Construction and working of Francis Turbine with neat sketch.

Description : Explain Construction and working of Francis Turbine with neat sketch.

Last Answer : The main parts of the Francis turbine are: 1) Penstock: It is the large pipe which conveys water from the upstream of the reservoir to the turbine runner. 2) Spiral casing: It is a closed passage ... After doing the work the water is discharge to the trail race through the draft tubes.

Explain the construction and working of induced draft cooling tower with neat sketch.

Description : Explain the construction and working of induced draft cooling tower with neat sketch.

Last Answer : Induced draft cooling tower :  Diagram: Construction and working: Cooling towers are employed to cool utility cooling water by direct contact with air. The parts of a cooling tower are ... top pulls the hot air through the fills and cooled water gets collected in the cold water basin.

Explain working of water level indicator with neat sketch.

Description : Explain working of water level indicator with neat sketch.

Last Answer : Water level indicator: Working: Its function to indicate water level in boiler. usually two water level indicator are fitted to in front of boiler. WLI shows the water level in in the boiler drum ... goes below a fixed mark , so that corrosive action may be taken in time to avoid accident. 

With neat sketch explain the construction and working of heat exchanger used for handling corrosive liquid.

Description : With neat sketch explain the construction and working of heat exchanger used for handling corrosive liquid.

Last Answer : Graphite block heat exchanger:   Graphite heat exchangers are well suited for handling corrosive fluids. Graphite is inert towards most corrosive fluids and has very high thermal conductivity. Graphite being ... vertical faces direct the service fluid through the exchanger in a cross flow.

Explain with neat sketch working of centrifugal pump.

Description : Explain with neat sketch working of centrifugal pump.

Last Answer : Working of centrifugal pump is in three stages i. Priming ii. Starting iii stoping i. Priming- The operation of filling the casing, impeller and suction pipe upto delivery valve ... pump, delivery valve should be closed partly. Motor is switched off and then value is closed fully. 

Explain with a neat sketch the working of Bourdon’s pressure guage.

Description : Explain with a neat sketch the working of Bourdon’s pressure guage.

Last Answer : Working: Bourdon tube pressure gauge is used to measure high pressure. It consists of tube as shown in fig. having elliptical cross section. This tube is called as Bourdons Tube. ... pressure in the case containing the bourdon tube is usually atmospheric, the pointer indicates gauge pressure.

Explain the working of Scotch Yoke mechanism with neat sketch.

Description : Explain the working of Scotch Yoke mechanism with neat sketch.

Last Answer : Scotch yoke mechanism. This mechanism is used for converting rotary motion into a reciprocating motion. The inversion is obtained by fixing either the link 1 or link 3. In Fig. link 1 is fixed. In this ... link 4 (which corresponds to a frame) reciprocates. The fixed link 1 guides the frame

Draw a neat sketch of ‘Locomotive coupler’ mechanism. Explain its working in brief.

Description : Draw a neat sketch of ‘Locomotive coupler’ mechanism. Explain its working in brief.

Last Answer : Figure: Coupler Rod of Locomotive  (Link AD = Link BC = Crank Link CD = Coupling Rod Link AB = Fixed Link = Frame) Working of Coupler Rod of Locomotive: It is an ... center distance between them. This mechanism is meant for transmitting rotary motion from one wheel to the other wheel.

Explain the working of Lamont boiler with neat sketch.

Description : Explain the working of Lamont boiler with neat sketch.

Last Answer : 1. This is a modern high pressure, water tube boiler working on a forced circulation. 2. The circulation is maintained by a centrifugal pump, driven by a steam turbine, using steam from the ... application. Lamont boilers generates 45 to 50 tones steam per hour at 130 bar with 5000 C.

Explain with neat sketch, the working of full wave rectifier voltmeter.

Description : Explain with neat sketch, the working of full wave rectifier voltmeter.

Last Answer : Full Wave Rectifier Type Voltmeter: Working of full wave rectifier type A. C. Voltmeter Referring to the circuit diagram, for rectification, a full wave bridge circuit (ABCD) is used. Input ... current passing through meter is given as, which causes full scale deflection of the meter.

With a neat sketch, explain the working of Thermal relay.

Description : With a neat sketch, explain the working of Thermal relay.

Last Answer : Working of Thermal Relay: 1) When the system is in normal operating condition, the heating element carries normal current from CT, this current produces heat = I2Rt. This heat ... of the spring releases which operates relay contacts resulting into providing trip signal to trip circuit.

Explain with neat sketch working of direct drive SWT. Give any two advantages of it over geared type SWT.

Description : Explain with neat sketch working of direct drive SWT. Give any two advantages of it over geared type SWT.

Last Answer : Direct Drive SWT: This plant has no gear box. Turbine blades are very light weight made up of stiff carbon fibre material. Blades are flat shaped. Due to this shape, lift increases. ... needed is less 4. More reliable 5. Better performance 6. Light weight 7. Less maintenance