A control system with excessive noise, is likely to suffer from (a) saturation in amplifying stages (b) loss of gain (c) vibrations (d) oscillations

A control system with excessive noise, is likely to suffer from (a) saturation in amplifying stages (b) loss of gain (c) vibrations (d) oscillations
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A control system with excessive noise, is likely to suffer from?

Description : A control system with excessive noise, is likely to suffer from?

Last Answer : A control system with excessive noise, is likely to suffer from saturation in amplifying stages.

When no signal is being received, the loudspeaker is not entirely silent as a result of the presence of A. parasitic oscillations in some of the receiver stages. B. negative feedback in each stage. C. spurious frequencies as a result of improper neutralization. D. internal receiver noise.

Description : When no signal is being received, the loudspeaker is not entirely silent as a result of the presence of A. parasitic oscillations in some of the receiver stages. B. negative feedback in each stage. C. spurious frequencies as a result of improper neutralization. D. internal receiver noise.

Last Answer : D. internal receiver noise.

A man exposed to excessive noise level in the working environment may suffer from (A) Hearing loss (B) Rupture of ear drum (C) Nervousness & fatigue (D) All (A), (B) & (C)

Description : A man exposed to excessive noise level in the working environment may suffer from (A) Hearing loss (B) Rupture of ear drum (C) Nervousness & fatigue (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

69 In case there are burrs on the edges of the laminations of the transformer, it is likely to result in A. Vibrations B. Noise C. Higher eddy currents loss D. Higher hysteresis loss

Description : 69 In case there are burrs on the edges of the laminations of the transformer, it is likely to result in A. Vibrations B. Noise C. Higher eddy currents loss D. Higher hysteresis loss

Last Answer : C. Higher eddy currents loss

The second derivative input signals modify which of the following? a) The time constant of the system b) Damping of the system c) The time constant and suppress the oscillations d) The gain of the system

Description : The second derivative input signals modify which of the following? a) The time constant of the system b) Damping of the system c) The time constant and suppress the oscillations d) The gain of the system

Last Answer : Ans: C

Vibrations in the tubes of a shell and tube heat exchanger is induced due to the (A) Flow of fluid on the tube and shell sides (B) Oscillations in the flow of shell/tube sides fluid (C) Vibrations transmitted through piping and/or supports due to external reasons (D) All (A), (B) and (C)

Description : Vibrations in the tubes of a shell and tube heat exchanger is induced due to the (A) Flow of fluid on the tube and shell sides (B) Oscillations in the flow of shell/tube sides fluid (C) Vibrations ... piping and/or supports due to external reasons (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Magnitude of earthquake indicates amount of a) Vibrations per second b) Vibrations per minute c) Oscillations d) Energy released

Description : Magnitude of earthquake indicates amount of a) Vibrations per second b) Vibrations per minute c) Oscillations d) Energy released

Last Answer : d) Energy released

What is the formula used to determine the gain of an amplifying device?

Description : What is the formula used to determine the gain of an amplifying device?

Last Answer : Gain = output ÷ input.

10] The main reason for generation of harmonics in a transformer could be A. Fluctuating load B. Poor insulation C. Mechanical vibrations D. Saturation of core

Description : 10] The main reason for generation of harmonics in a transformer could be A. Fluctuating load B. Poor insulation C. Mechanical vibrations D. Saturation of core

Last Answer : D) saturation of core

A loud buzzing noise coming from the contacts in a magnetic controller can be caused by ____________. A. excessive current B. excessive magnet gap C. bouncing of contacts D. dirt on magnet faces

Description : A loud buzzing noise coming from the contacts in a magnetic controller can be caused by ____________. A. excessive current B. excessive magnet gap C. bouncing of contacts D. dirt on magnet faces

Last Answer : Answer: D

A loud buzzing noise at the contacts of a magnetic controller could indicate _____________. A. weak contact spring pressure B. misalignment of the magnet faces C. excessive line current D. mechanical binding

Description : A loud buzzing noise at the contacts of a magnetic controller could indicate _____________. A. weak contact spring pressure B. misalignment of the magnet faces C. excessive line current D. mechanical binding

Last Answer : Answer: B

The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is (A) Pipe vibrations (B) Cavitation (C) Boundary layer separation (D) Fluctuation in liquid flow

Description : The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is (A) Pipe vibrations (B) Cavitation (C) Boundary layer separation (D) Fluctuation in liquid flow

Last Answer : (B) Cavitation

Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels. (A) 3 (B) 30(C) 7 (D) 70

Description : Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels. (A) 3 (B) 30 (C) 7 (D) 70

Last Answer : (A) 3

60)The noise resulting from vibrations of laminations set by magnetic force, is termed as A. magnetostriction B. boo C. hum D. zoom

Description : 60)The noise resulting from vibrations of laminations set by magnetic force, is termed as A. magnetostriction B. boo C. hum D. zoom

Last Answer : C. Hum

Phosphatic fertilisers (A) Are useful during early stage of the plant growth (B) Accelerate fruit formation in later stages of growth (C) Lessen the effect of excessive nitrogen application (D) None of these

Description : Phosphatic fertilisers (A) Are useful during early stage of the plant growth (B) Accelerate fruit formation in later stages of growth (C) Lessen the effect of excessive nitrogen application (D) None of these

Last Answer : (B) Accelerate fruit formation in later stages of growth

On an engine throttle control system, the auxiliary control circuits are provided with devices to prevent excessive overtravel of the pilot valve by the synchronous motor. These devices are called _________________. A. overlap sensors B. limit switches C. overtravel relays D. proximity switches

Description : On an engine throttle control system, the auxiliary control circuits are provided with devices to prevent excessive overtravel of the pilot valve by the synchronous motor. These devices are called _________________. A. overlap sensors B. limit switches C. overtravel relays D. proximity switches

Last Answer : Answer: B

Consider the following statements Fibre saturation point in wood is reached when 1. Free water is removed 2. Cell water is removed 3. Shrinkage of wood is rapid 4. Strength gain is rapid Which of these statements are correct? (a) 1, 2 and 3 (b) 1 and 2 only (c) 2 and 4 only (d) 1, 3 and 4

Description : Consider the following statements Fibre saturation point in wood is reached when 1. Free water is removed 2. Cell water is removed 3. Shrinkage of wood is rapid 4. Strength gain is rapid Which of these statements are correct? (a) 1, 2 and 3 (b) 1 and 2 only (c) 2 and 4 only (d) 1, 3 and 4

Last Answer : (d) 1, 3 and 4

An operational amplifier has an open loop gain of 200,000. Its output exhibits saturation at 10V.

Description : An operational amplifier has an open loop gain of 200,000. Its output exhibits saturation at 10V. The threshold differential voltage of the amplifier is  A) 25 micro-volt B) 50 micro-volt C) 5 Volts D) 10 volts

Last Answer : An operational amplifier has an open loop gain of 200,000. Its output exhibits saturation at 10V. The threshold differential voltage of the amplifier is 50 micro-volt

Is the (exaggerated) pursuit of pleasure ironically amplifying misery?

Description : Is the (exaggerated) pursuit of pleasure ironically amplifying misery?

Last Answer : I do often think that more actually means less. What are we here for as Human Beings - just to aquire more goods and things? To find these things at the expense of having any real freedom? We ... we dont really need. Hypnotised by adverts who persuade us that buy, buy, buy will make us happy.

The radio snorts when amplifying the sound.

Description : The radio suddenly snores when it turns to sound control. It's pretty annoying. That probably won't stop again, will it? I have such a classic twin. I may add a photo. (not mine but that radio) :-)

Last Answer : Post your photo, I don't need to see the radio ...: D There is a dusty or damaged volume control button. The first case can be solved with a contact cleaner (eg Kontox) and pierced the brush. The second ... , it's not usually a problem). Of course - wouldn't it deserve to replace the whole radio? :O

Program for amplifying MP3 songs?

Description : Don't you know of a program that amplifies MP3 songs? I have a portable MP3 player, but it plays very quietly. So it occurred to me to amplify the songs. But that quality will go dill, huh?

Last Answer : MP3 is a lossy format (at the very size), so you can say to some extent that you don't know the difference in quality. Personally, I use Audacity to edit the sound, because it's ... tool that modifies the selected files based on the specified criteria. Or maybe you could just buy better headphones.

The following is an amplifying device : (1) a transformer (2) a transistor (3) a diode (4) a resistor

Description : The following is an amplifying device : (1) a transformer (2) a transistor (3) a diode (4) a resistor

Last Answer : (2) a transistor Explanation: A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power.

Which one among the following components is used as an amplifying device? (1) Transformer (2) Diode (3) Capacitor (4) Transistor

Description : Which one among the following components is used as an amplifying device? (1) Transformer (2) Diode (3) Capacitor (4) Transistor

Last Answer : (4) Transistor Explanation: An amplifier is an electronic device that increases the voltage, current, or power of a signal. Generally transistors are active devices that can be used with discrete components to amplify voltage, power or both depending upon the configuration.

They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser). ∙ A. Theodore Maiman ∙ B. KC Kao and GA Bockham ∙ C. Charles Townes and Arthur Schawlow ∙ D. Kapron, Keck and Maurer

Description : They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser). ∙ A. Theodore Maiman ∙ B. KC Kao and GA Bockham ∙ C. Charles Townes and Arthur Schawlow ∙ D. Kapron, Keck and Maurer

Last Answer : C. Charles Townes and Arthur Schawlow

They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser).

Description : They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser).

Last Answer : Charles Townes and Arthur Schawlow

Which one among the following components is used as an amplifying device? (1) Transformer (2) Diode (3) Capacitor (4) Transistor

Description : Which one among the following components is used as an amplifying device? (1) Transformer (2) Diode (3) Capacitor (4) Transistor

Last Answer : Transistor

All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity. a) propagation b) latency c) noise d) all of the mentioned

Description : All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity. a) propagation b) latency c) noise d) all of the mentioned

Last Answer : latency

All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity. a) propagation b) latency c) noise d) all of the mentioned

Description : All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity. a) propagation b) latency c) noise d) all of the mentioned

Last Answer : latency

.All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity a) Propagation b) Latency c) Noise d) All of these

Description : .All cloud computing applications suffer from the inherent _______ that is intrinsic in their WAN connectivity a) Propagation b) Latency c) Noise d) All of these

Last Answer : Latency

What negative effects did women suffer from in their attempts to gain the right to vote in France?

Description : What negative effects did women suffer from in their attempts to gain the right to vote in France?

Last Answer : Feel Free to Answer

Comparing L-C oscillation with the oscillation if spring-block-system, match the following table. Comparing L-C oscillations with the oscillations of

Description : Comparing L-C oscillation with the oscillation if spring-block-system, match the following table. Comparing L-C oscillations with the oscillations of

Last Answer : Comparing L-C oscillation with the oscillation if spring-block-system, match the following table. Comparing L-C ... ,x),(,,,(T),"None"):}`

Window cracks with excessive noise

Description : Is it theoretically possible for a thin glass window to break in the barracks with really loud music at home? We don't have plastic windows yet and I'm afraid the window panel will spill out.

Last Answer : Of course, if the noise is really loud, the window may crack.

What are the possible causes of excessive vibration or noise in a steam turbine?

Description : What are the possible causes of excessive vibration or noise in a steam turbine?

Last Answer : 1. Misalignment. 2. Worn bearings. 3. Worn coupling to driven machine. 4. Unbalanced coupling to driven machine. 5. Unbalanced wheel. 6. Piping strain. 7. Bent shaft.

How can problems of "excessive vibration or noise" due to piping strain be avoided on steam turbines?

Description : How can problems of "excessive vibration or noise" due to piping strain be avoided on steam turbines?

Last Answer : 1. The inlet as well as exhaust steam lines should be firmly supported to avoid strains from being imposed on the turbine. 2. Adequate allowance should be made for expansion of steam pipes due to heat.

Excessive noise in operation/ Compressor make noise

Description : Excessive noise in operation/ Compressor make noise

Last Answer : Causes remedial action 1. Loose pulley, flywheel, belt, belt guard, cooler, clamps or accessories. Tighten any loose ends. 2. Lack of oil in crankcase. Check for possible damage ... a good idea to replace your vibration pads 5. Defective crankcase. Repair or replace.

If the operating point of an NPN transistor amplifier is selected in saturation region, it is likely to result in A) Thermal runaway of transistor B) Clipping of output in the positive half of the input signal C) Need for high dc collector supply D) Clipping of output in the negative half of the input signal

Description : If the operating point of an NPN transistor amplifier is selected in saturation region, it is likely to result in A) Thermal runaway of transistor B) Clipping of output in the positive half of the ... for high dc collector supply D) Clipping of output in the negative half of the input signal

Last Answer : B) Clipping of output in the positive half of the input signal

The nurse recognizes that the patient with a duodenal ulcer will likely experience a) pain 2-3 hours after a meal. The patient with a gastric ulcer often awakens between 1-2 A.M. with pain and ingestion of food brings relief. b) vomiting. Vomiting is uncommon in the patient with duodenal ulcer. c) hemorrhage. Hemorrhage is less likely in the patient with duodenal ulcer than the patient with gastric ulcer. d) weight loss. The patient with a duodenal ulcer may experience weight gain.

Description : The nurse recognizes that the patient with a duodenal ulcer will likely experience a) pain 2-3 hours after a meal. The patient with a gastric ulcer often awakens between 1-2 A.M. with pain ... patient with gastric ulcer. d) weight loss. The patient with a duodenal ulcer may experience weight gain.

Last Answer : a) pain 2-3 hours after a meal. The patient with a gastric ulcer often awakens between 1-2 A.M. with pain and ingestion of food brings relief.

What is the problem anticipated due to CT saturation?

Description : What is the problem anticipated due to CT saturation?  

Last Answer : The CT will not be able to drive the current through the circuit causing nonoperation of relays. In some other case when the currents in the two phases are compared for relay operation the relay may operate due to unbalance. 

Who discovers neutrino oscillations ?

Description : Who discovers neutrino oscillations ?

Last Answer : Neutrino oscillation was discovered by scientist Takaki Kazita.

A student measures time for 20 oscillations of a simple pendulum as 30 s. 32 s, 35 s and 31 s. 1f the minimum division in the measuring clock

Description : A student measures time for 20 oscillations of a simple pendulum as 30 s. 32 s, 35 s and 31 s. 1f the minimum division in the measuring clock

Last Answer : A student measures time for 20 oscillations of a simple pendulum as 30 s. 32 s, 35 s and 31 s. 1f the minimum ... 1 (C) 32 2 (D) 32 5

What are the conditions for oscillations?

Description : What are the conditions for oscillations?

Last Answer : There are three conditions. These include positive feedback, thephase near the circuit needs to be either 36 or zero degrees, andthe loop gain should be equal or greater than 1.

For short-term climatic predictions, which one of the following events, detected in the last decade, is associated with occasional weak monsoon rains in the Indian subcontinent? [IAS 2002] (a) La Nina (b) Movement of jet streams (c) El Nino and southern oscillations (d) Green-house effect on global level

Description : For short-term climatic predictions, which one of the following events, detected in the last decade, is associated with occasional weak monsoon rains in the Indian subcontinent? [IAS 2002] (a) La Nina ( ... of jet streams (c) El Nino and southern oscillations (d) Green-house effect on global level

Last Answer : Ans: (c)

Which of the following phenomena is supposedly associated with global warming? (1) Southern Oscillations (2) El Nino (3) La Nino (4) El Nino Modiki

Description : Which of the following phenomena is supposedly associated with global warming? (1) Southern Oscillations (2) El Nino (3) La Nino (4) El Nino Modiki

Last Answer : (4) El Nino Modiki Explanation: El Nino Modiki is associated with global warming.

The rate of decay of oscillations is known as....... A. critical damping B. damping coefficient C. transmissibility D. logarithmic decrement

Description : The rate of decay of oscillations is known as....... A. critical damping B. damping coefficient C. transmissibility D. logarithmic decrement

Last Answer : D. logarithmic decrement

Negative damping leads to a. instability b. fast convergence c. oscillations

Description : Negative damping leads to a. instability b. fast convergence c. oscillationsNegative damping leads to a. instability b. fast convergence c. oscillations

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During secular variation of magnetic meridian at different places (A) Range of oscillations is constant (B) Period of oscillation is constant (C) Range and period of oscillation both vary (D) Period of oscillation only varies

Description : During secular variation of magnetic meridian at different places (A) Range of oscillations is constant (B) Period of oscillation is constant (C) Range and period of oscillation both vary (D) Period of oscillation only varies

Last Answer : (C) Range and period of oscillation both vary

What method is used to prevent oscillations in large synchro units?

Description : What method is used to prevent oscillations in large synchro units?

Last Answer : Mechanical damping.

What are the three requirements necessary for oscillations to exist in a circuit?

Description : What are the three requirements necessary for oscillations to exist in a circuit?

Last Answer : Amplification, regenerative feedback, and frequency-determining device.

What starts the oscillations in a negative-resistance magnetron?

Description : What starts the oscillations in a negative-resistance magnetron?

Last Answer : The application of the proper magnetic field.