Description : In a compression or longitudinal wave the particles of the medium are displaced in a direction to the direction of energy transport.?
Last Answer : Feel Free to Answer
Description : As a longitudinal wave moves through a medium, the particles of the medium: w) vibrate in a path parallel to the path of the wave x) vibrate in a path perpendicular to the path of the wave y) follow the wave along its entire path z) do not move
Last Answer : ANSWER: W -- VIBRATE IN A PATH PARALLEL TO THE PATH OF THE WAVE
Description : Stationary wave is formed by – (1) a transverse wave superposing a longitudinal wave (2) two waves of the same speed superposing (3) two waves of same frequency travelling in the same direction (4) two waves of same frequency travelling in the opposite direction
Last Answer : (4) two waves of same frequency travelling in the opposite direction Explanation: Stationary or standing waves are formed in a medium when two waves having equal amplitude and frequency moving in ... and the reflected wave. Both longitudinal and transverse types of waves can form a stationary wave.
Description : Stationary wave is formed by (1) a transverse wave superposing a longitudinal wave (2) two waves of the same speed superposing (3) two waves of same frequency travelling in the same direction (4) two waves of same frequency travelling in the opposite direction
Last Answer : two waves of same frequency travelling in the opposite direction
Description : Which of the following is a type of free vibration? A Longitudinal vibrations B Transverse vibrations C Torsional vibrations D A, B and C
Last Answer : D A, B and C
Description : Which of the following is a type of free vibration? A. Longitudinal vibrations B. Transverse vibrations C. Torsional vibrations D. A, B and C
Last Answer : D. A, B and C
Description : Critical speed of shaft and disc system A) Is equal to natural frequency of the system in transverse vibration B) Is equal to natural frequency of the system in torsional vibration C) Is ... of the system in longitudinal vibration D) Bears no relationship to any of the system natural frequency
Last Answer : A) Is equal to natural frequency of the system in transverse vibration
Description : In a spring mass system of mass m and stiffness k, the end of the spring are securely fixed and mass is attached to intermediate point of spring. The natural frequency of longitudinal ... is attached decreases D) Decreases as the distance from the bottom end where mass is attached decreases
Last Answer : B) Is minimum when mass is attached to mid point of the spring
Description : In the spring mass system if the mass of the system is doubled with spring stiffness halved, the natural frequency of longitudinal vibration A) Remained unchanged B) Is doubled C) Is halved D) Is quadruped
Last Answer : C) Is halved
Description : If the particle of a body vibrate along a circular arc, whose centre lies on the axis of the shaft then the body is said to have A) Transverse vibration B) Longitudinal vibration C) Torsional vibration D) None of the above
Last Answer : C) Torsional vibration
Description : Which of the following is a type of free vibration? ( A ) Longitudinal vibrations ( C ) Torsional vibrations D ( B ) Transverse vibrations ( D ) A, B and C
Last Answer : ( D ) A, B and C
Description : The advantages of electrometric bearings are a) Permits movement of the structure in all directions b) Serves as a shock absorber due to anti-vibration properties of elestomeric c) better dispersion of longitudinal forces to the approaches d) All of the above*
Last Answer : d) All of the above*
Description : The waves in which particles vibrate in the direction perpendicular to the direction of wave propagation are called
Last Answer : transverse waves.
Description : What are Waves that move the particles of the wave parallel to the direction the waves are traveling are called?
Last Answer : the distance between two corresponding parts of a wave is a waves
Description : Two particles of of a medium disturbed by the wave propagation are at `x_(1) = 0` and `x_(2) = 1 cm`. The wave is propagating in positive x-direction.
Last Answer : Two particles of of a medium disturbed by the wave propagation are at `x_(1) = 0` and `x_(2) = 1 cm`. The ... `y = (2) sin [(2pi)/(16)(24t-x)]cm`.
Description : In which type of waves is the motion of the particles perpendicular to the direction of the wave is traveling?
Last Answer : transverse waves
Description : Pick up the incorrect statement from the following: (A) As a wave of sea water approaches the coast line, it is generally accompanied by a drift of water in the direction of wave advance (B) ... in the direction of the wave (D) The wave while receding carries finer particles out to deep water
Last Answer : (C) A falling hydraulic gradient occurs in the direction of the wave
Description : When the particles of the shaft or disc move in a circle about the axis of the shaft, then the vibrations are known as ___________ . A Longitudinal vibrations B Transverse vibrations C Torsional vibrations D None of these
Last Answer : C Torsional vibrations
Description : Longitudinal vibrations are said to occur when the particles of a body moves A Perpendicular to its axis B Parallel to its axis C In a circle about its axis D None of the mentioned
Last Answer : B Parallel to its axis
Description : When the particles of the shaft or disc move in a circle about the axis of the shaft, then the vibrations are known as ___________ . A. longitudinal vibrations B. transverse vibrations C. torsional vibrations D. none of these
Last Answer : C. torsional vibrations
Description : Longitudinal vibrations are said to occur when the particles of a body moves (A) Perpendicular to its axis B (B) Parallel to its axis (C) In a circle about its axis (D) None of the mentioned
Last Answer : (B) Parallel to its axis
Description : Longitudinal vibrations are said to occur when the particles of a body moves a) perpendicular to its axis b) parallel to its axis c) in a circle about its axis d) none of the mentioned
Last Answer : b) parallel to its axis
Description : Two vibrating particles that are "out of phase" differ in the phase of their vibration by: w) 1/4 cycle x) 1/2 cycle y) 3/4 cycle z) 1 cycle
Last Answer : ANSWER: X -- 1/2 CYCLE
Last Answer : A wave that travels parallel to the direction of vibration is called a longitudinal wave.
Description : Which term describes the distance between any two crest in a transverse wave or the distance between any two rarefaction's in a longitudinal wave?
Last Answer : wavelength
Description : Which term describes the distance between any two crests in a transfer wave or the distance between any two rarefactions in a longitudinal wave?
Last Answer : Wavelength
Description : What example of a longitudinal wave was given in the text?
Last Answer : A sound wave.
Description : If digital DRT is calibrated for 300 mm longitudinal wave using 00 double crystal probe then 60kg rail ---------peak will appear at (i) 5.2 (ii) 5.7* (iii) 7.8 (iv) 8.6
Last Answer : ii) 5.7*
Description : An electromagnetic wave is ALWAYS: w) longitudinal x) polarized y) spherical z) transverse.
Last Answer : ANSWER: Z -- TRANSVERSE
Description : Distinguish between transverse wave and longitudinal wave.
Last Answer : Transverse Wave Longitudinal Waves The wave in which direction of vibration of particles of material medium is perpendicular to the direction of propagation of wave is called transverse wave. The wave in ... travels through liquids and gases. e.q. Light wave e.q. Sound waves
Description : Pick out the wrong statement. (A) Superheated steam is preferably not used for process heating because of its low heat transfer film co-efficient (B) In a shell and tube heat exchanger ... surface heat exchangers, when the direction of fluid flow is parallel to the axis of the tube
Last Answer : (C) S.I. unit of fouling factor is Watt/m2 .°K
Description : If force act in a direction parallel to the direction of weld, then fillet weld is called as? a) Transverse b) Longitudinal c) Parallel d) Longitudinal or Parallel
Last Answer : d) Longitudinal or Parallel
Description : In an ideal tubular-flow reactor (A) There is no mixing in longitudinal direction (B) Mixing takes place in radial direction (C) There is a uniform velocity across the radius (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Pick out the wrong statement. (A) The vessel dispersion number (D/UL) for plug flow and mixed flow approaches zero and infinity respectively (B) Space time in a flow reactor is a ... ideal tubular flow reactor, mixing takes place in radial direction and there is no mixing in longitudinal direction
Last Answer : (C) Mixed reactor is always smaller than the plug flow reactor for all positive reaction orders for a particular duty
Description : The stress in the wall of a cylinder in a direction normal to its longitudinal axis, due to a force acting along the circumference, is known as (A) Yield stress (B) Longitudinal stress (C) Hoop stress (D) Circumferential stress
Last Answer : (C) Hoop stress
Description : If the elevations along a road increase, the slope of the road along the longitudinal direction, is known as (A) Gradient (B) Grade (C) Positive grade (D) Negative grade
Last Answer : Answer: Option A
Description : If a ‘vertical aerial photograph’, (20 cm x 20 cm) in size, on a R.F.I: 10,000, has 60% longitudinal overlap and 40% side overlap, the actual ground length covered by each photograph in the longitudinal direction of the flight will be : (a) 4 km (b) 6 km (c) 0.8 km (d) 0.4 km
Last Answer : .8
Description : The quality or tone of a musical sound produced by a stringed instrument depends on – (1) frequency of vibration (2) length of the strings in the instrument (3) Amplitude of vibration (4) wave form of the sound
Last Answer : (4) wave form of the sound Explanation: The timbre or quality of a sound depends on its wave form, which varies with the number of over-tones, or harmonics, that are present, their ... particular musical sound have a different sound from another, even when they have the same pitch and loudness.
Description : Two sources of light are said to be coherent if __________. A. they produce waves of the same wave length B. they have the same amplitude of vibration C. they produce waves in the medium simultaneously D. they produce waves of the same amplitude
Last Answer : D. they produce waves of the same amplitude
Description : The quality or tone of a musical sound produced by a stringed instrument depends on (1) frequency of vibration (2) length of the strings in the instrument (3) Amplitude of vibration (4) wave form of the sound
Last Answer : wave form of the sound
Description : In a two-rotor system, torsional vibration occurs only if the rotors are moving in the ______ direction. (A) same (B) opposite (C) either same or opposite (D) none of the above
Last Answer : (B) opposite
Description : In a two-rotor system, torsional vibration occurs only if the rotors are moving in the ______ direction. A. same B. opposite C. either same or opposite D. none of the above
Last Answer : B. opposite
Description : In the diagram shown below, if rotor X and rotor Z rotate in same direction and rotor Y rotates in opposite direction, then specify the type of node vibration. A. Three node vibration B. Two node vibration C. Single node vibration D. None of the above
Last Answer : B. Two node vibration
Description : When heavy rotating masses are connected by a shaft and equal and opposite torques are applied to these masses (rotors) A. The rotors vibrate torsionally in the same direction. B. The rotors vibrate torsionally ... on the axis of shaft which remains undisturbed by vibration. D. Both (B) and (C)
Last Answer : D. Both (B) and (C)
Description : In the diagram shown below, if rotor X and rotor Z rotate in same direction and rotor Y rotates in opposite direction, then specify the no of degree of freedom vibration.a. Three degree of freedom vibration b. Two degree of freedom vibration c. Single degree of freedom vibration d. None of the above
Last Answer : b. Two degree of freedom vibration
Description : Identify the sensors for the following : i) Wind speed ii) RPM of generator shaft iii) Temperature in generator iv) Cable untwisting v) Vibration vi) Wind direction
Last Answer : i) Wind Speed : Anemometer. ii) RPM of Generator Shaft: Accelerometers. iii) Temperature in Generator: Thermistor, thermocouple, RTD. iv) Cable Untwisting : Cable Twisting sensor. v) Vibration : Accelerometer, piezoelectric. vi) Wind direction: Wind vane.
Description : Do the particles of the medium in which a wave moves travel along with the wave? Explain with an example.
Last Answer : When a wave propagates in a medium, the particles of the medium vibrate about their mean position and the energy is transferred without transfer of the particles of the medium. For example: Take some water ... cork in it. When the water is disturbed, the cork moves up and down but not forward.
Description : How is the energy transferred in a wave without transfer of particles of the medium?
Last Answer : When a wave propagates in a medium, the particles of the medium vibrate about their mean position and the energy is transferred without the transfer of particles of the medium.