Description : A car having a mass of 1000 kg deflects its springs 4 cm under its load. Determine the natural frequency of the car in vertical direction. A 5 Hz B 4.67 Hz C 9.8 Hz D 2.49 Hz
Last Answer : D 2.49 Hz
Description : A car having a mass of 1000 kg deflects its springs 4 cm under its load. Determine the natural frequency of the car in vertical direction. A 5 HzB 4.67 Hz C 9.8 Hz D 2.49 Hz
Description : A car having a mass of 1000 kg deflects its springs 4 cm under its load. D Determine the natural frequency of the car in vertical direction. (A)5 Hz (B) 4.67 Hz (C) 9.8 Hz (D) 2.49 Hz
Last Answer : (D) 2.49 Hz
Description : What is the required quality factor for an SSB filter with the following data: center frequency= 1 MHz, the desired attenuation level of the unwanted sideband= 80 dB and the separation between sidebands= 200 Hz? A. 1,250 B. 12,500 C. 125,000 D. 25,000
Last Answer : C. 125,000
Description : Pigeons are highly alert as they can detect a sound frequency of
Last Answer : Pigeons are highly alert as they can detect a sound frequency of A. 0.1 Hz B. 1.0 Hz C. 4 Hz D. upto 10 Hz
Description : The frequency of a source of sound is 200 hz.How many Times does it vibrate in 2 min? -Physics
Last Answer : Hence, the source vibrates 12000 times in a minute, producing a frequency of 00 Hz.
Description : The mean velocity of blood flow in the aorta during systole is 1.5 × 10–2 m / s. What is the frequency change in an instrument with a signal frequency of 105 Hz (speed of sound in blood, 1570 m / s)?
Last Answer : 1060 kg/m3, very close to pure water's density of 1000 kg/m3. The average adult has a blood volume of roughly 5 litres (11 US pt) or 1.3 gallons, which is composed of plasma ... .4 million (female) erythrocytes: Red blood cells contain the blood's hemoglobin and distribute oxygen. Mature red blood
Description : Sound of frequency below 20 Hz is called ______.
Last Answer : Infrasonic
Description : Sound of frequency below 20 Hz are called (a) Audio sounds (b) Infrasonics (c) Ultrasonics (d) Supersonics
Last Answer : Ans:(b)
Description : What are audible sound waves? (1) Having frequency less than 20 Hz (2) Having frequency between 20 Hz to 20000 Hz (3) Having frequency more than 20000 Hz (4) None of above
Last Answer : (2) Having frequency between 20 Hz to 20000 Hz
Description : Man perceives sound vibrations in the frequency ranges of – (1) 0 – 5 Hz (2) 6 - 10 Hz (3) 11 - 15 Hz (4) 20 - 20000 Hz
Last Answer : (4) 20 - 20000 Hz Explanation: The frequencies at which a human being can perceive sound vary between 20 Hertz and 20,000 Hertz. It is within these frequency ranges that people can communicate to each other and listen to music.
Description : Sound of frequency below 20 Hz is called ______. (1) audio sounds (2) infrasonic (3) ultrasonic (4) supersonics
Last Answer : (2) infrasonic Explanation: The term "infrasonic" applied to sound refers to sound waves below the frequencies of audible sound and nominally includes anything under 20 Hz.
Description : What is the frequency of a 2-cm sound wave in sea water at 25˚C? A. 76 kHz B. 76 Hz C. 76 MHz D. 76 mHz
Last Answer : A. 76 kHz
Description : The midrange frequency range of sound is from A. 256 to 2048 Hz B. 2048 to 4096 Hz C. 512 to 2048 Hz D. 16 to 64 Hz
Last Answer : A. 256 to 2048 Hz
Description : Man perceives sound vibrations in the frequency ranges of (1) 0 – 5 Hz (2) 6 – 10 Hz (3) 11 – 15 Hz (4) 20 – 20000 Hz
Last Answer : 20 – 20000 Hz
Description : i have 400,000 in lump sum retirement, how much can i expect in monthly payments. I and my wife are 67?
Last Answer : What you are paid monthly will depend on your agreement on how many years it will be paid out over.
Description : Super Profit is Rs.9,167 and the Normal Rate of Return is 10% Goodwill as per capitalization of Super Profit method is equal to A Rs.91,670 B Rs.90,600 C Rs.67,910 D Rs.95,000
Last Answer : ANS: Rs 91670
Description : If profit of the company is Rs 20,000 , sales is 10 per unit and variable cost is Rs 4 per unit calculate Margin of safety. a) Rs 33,333.33 b) Rs 16,666.67 c) Rs 10,000 d) Rs 20,000
Last Answer : a) Rs 33,333.33
Description : A client-server system uses a satellite network, with the satellite at a height of 40,000 kms. What is the best-case delay in response to a request? (Note that the speed of light in air is 3,00,000 km/second). (A) 133.33 m sec (B) 266.67 m sec (C) 400.00 m sec (D) 533.33 m sec
Last Answer : (D) 533.33 m sec Explanation: The request has to go up and down, and the response has to go up and down. The total path length traversed is thus 160.000 km. The speed of light in air and vacuum is 300,000 km/sec, so the propagation delay alone is 160,000/300,000 sec or about 533 msec.
Description : A resonant system has a fundamental frequency of 100 Hz. If the next higher frequency that gives a resonance are 300 Hz and 500 Hz, the system could be (a) A pip open at both ends (b) A pipe ... (c) A string vibrating between two fixed points (d) A pipe open at one end and closed at the other
Last Answer : Ans:(d)
Description : “A dog’s sense of smell is thought to be over 1,000 times more sensitive than a human’s. They have been used to detect cancer in humans based on smelling breath samples.”
Last Answer : A dog interprets the world predominantly by smell, whereas a human interprets it by sight. A human has about 5 million scent glands, compared to a dog, which can have anywhere from 125 million to ... cancer in people, including smelling it in situ or at stage zero, mostly through human breath.
Description : What is the wavelength in millimeters of a sound wave whose frequency is 35 KILOHERTZ. Assume the speed of sound is 350 METERS PER SECOND? w) 100 millimeters x) 1,000 millimeters y) 10 millimeters z) 1/10 millimeters
Last Answer : ANSWER: Y -- 10 MILLIMETERS
Description : ____________ is the out-of-band signaling between toll central offices (Bell System Standard) A. 2,000 Hz B. 800 Hz C. 3,835 Hz D. 3700 Hz
Last Answer : D. 3700 Hz
Description : Humans can hear in the range of --- to ----Hertz (Hz).? A. 10 Hz to 10,000 Hz. B. 20 Hz to 20,000 Hz? C. 30 Hz to 30,000 Hz. D. 40 Hz to 40,000 Hz.
Last Answer : B. 20 Hz to 20,000 Hz?
Description : What must the physical length of a transmission line be if it will be operated at 15,000,000 Hz?
Last Answer : . λ = 20 meters
Description : Ten signals, each requiring 3000 Hz, are multiplexed on to a single channel using FDM. How much minimum bandwidth is required for the multiplexed channel ? Assume that the guard bands are 300 Hz wide. (A) 30,000 (B) 32,700 (C) 33,000 (D) None of the above
Last Answer : (B) 32,700
Description : The frequency spectrum of the stereophonic FM signal. A. 67 kHz B. 59.5 to 74.5 kHz C. 19 to 38 kHz D. 30 to 53 kHz
Last Answer : D. 30 to 53 kHz
Description : Can animals detect illness?
Last Answer : Dogs have been trained to detect lung and breast cancer by smelling the patient’s breath. They’re quite good at it. (article)
Description : Highly specialised cells in animals which can detect, receive & transmit different kinds of stimuli
Last Answer : Highly specialised cells in animals which can detect, receive & transmit different kinds of stimuli
Description : In the frequency theory of smell how many octaves can a human detect?
Last Answer : It is not possible to rank smells on a single scale the way we do for sound. There are different combinations of chemicals that can be detected. I suppose we could compare a human's capabilities ... , and taking a dog's sensitivity as four octaves, express human capability as some fraction of that.
Description : There is a word. It has five letters. Its last three letters refer to a skill of creating objects. Its middle three letters refer to one of the parts found at either side of your head. Its first two ... its middle three letters to detect sound. Its whole is found in you. What word is it ? -Riddles
Last Answer : Heart.
Description : Radar is used for (a) Detecting objects by using light waves (b) Reflecting sound waves to detect objects (c) Determining the presence and location of objects with radio waves (d) Tracking rain-bearing clouds
Description : A 3 phase 50 Hz induction motor has full load speed of 970 rpm. Calculate no of poles and slip frequency.
Last Answer : The number of poles in an induction motor can be calculated using the following formula: No. of poles = (120 * frequency) / speed In this case, the number of poles would be calculated as follows: No. of poles = ( ... ) - 50 Hz = 8.08 Hz So the motor has 6 poles and a slip frequency of 8.08 Hz.
Description : Heating 235 g of water from 22.6 degrees C to 94.4 degrees C in a microwave oven requires 7.06x10^4 J of energy. If the microwave frequency is 2.88x10^10 Hz, how many quanta are required to supply the 7.06x10^4 J?
Last Answer : answer:Guidelines. I don’t mean to be the bearer of bad news…
Description : A wire having a linear density `0.1 kg//m` is kept under a tension of `490N`. It is observed that it resonates at a frequency of `400 Hz`. The next hi
Last Answer : A wire having a linear density `0.1 kg//m` is kept under a tension of `490N`. It is observed that it resonates at a ... 0.6 m` C. `0.49 m` D. `0.7 m`
Description : A sinusoidally alternating current of frequency 60 Hz has a maximum value of 15 A. Find the value of current after 1/200 second
Last Answer : A sinusoidally alternating current of frequency 60 Hz has a maximum value of 15 A. Find the value of current after 1/200 second
Description : A particular hydrogen like atom with radiation of frequency `2.467 xx 10^(15)Hz` when it makes transition from `n = 3 to n = 1` ,What will be the freq
Last Answer : A particular hydrogen like atom with radiation of frequency `2.467 xx 10^(15)Hz` when it makes transition from ... a transition from `n = 3 to n= 1`?
Description : What is the speed of the wave if the frequency is 80 Hz and the wavelength is 4m?
Last Answer : The speed of any wave is the product of frequency xwavelength.
Description : What is the energy of a electromagnetic wave with a frequency of 3 x 109 Hz?
Last Answer : 1.99 x 10-24
Description : What is the wavelength of an earthquake wave if it has a speed of 14 kms and a frequency of 10 Hz?
Last Answer : speed = wavelength x frequencywavelength = speed/frequencyspeed = 14 km/s , frequency = 10 Hz = 10/swavelength = (14 km/s)/(10/s) = 1.4 km
Description : What is the energy of an electromagnetic wave with a frequency of 3x10 9 HZ?
Last Answer : Feel Free to Answer
Description : What is 220 hZ frequency used for?
Last Answer : What is the answer ?
Description : What is the capacitive resistance of a 0.04 microfarad capacitor in ac circuit that has a frequency of 1000 hz?
Last Answer : The capacitive reactance is approximately 4 kΩ .
Description : A travelling wave passes a point of observation where the time interval between successive crests is 0.2 s. Which of the following is then true? (a) The wavelength is 5 m (b) The wavelength is 0.2 m (c) The velocity of propagation is 5 m/s (d) The frequency of 5 Hz.
Description : The frequency of direct current is __. (1) Zero (2) 50 HZ (3) 60 HZ (4) 100 HZ
Last Answer : (1) Zero Explanation: Direct Current (DC) refers to power systems that use only one polarity of voltage or current, and to refer to the constant, zero-frequency, or slowly varying local mean value of a voltage or current.
Description : Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in opposite direction with a speed of 20 mm/s. The distance in mm between adjacent nodes is : (1) 1.0 (2) 1.2 (3) 1.5 (4) 2.0
Last Answer : (1) 1.0 Explanation: Since the amplitudes, frequency and the speed of both the waves are in same, hence the wavelength of the composite wave will be the same as the single wave.
Description : If the phase difference between two points is 120° for a wave with velocity of 360 m/ and frequency 500 Hz, then path difference between the two points is – (1) 1 cm (2) 6 cm (3) 12 cm (4) 24 cm
Last Answer : (4) 24 cm
Description : If the synchronous speed of a 12 pole, polyphase, induction motor operating at 60 Hz were 600 RPM, how many poles will be required in a similar motor operating at the same frequency but having a synchronous speed of 900 RPM? A. 4 B. 6 C. 8 D. 18
Last Answer : Answer: C