Description : What do you call a measure of how many times an object vibrates per second?
Last Answer : That is called the frequency of the vibration. A common unit isthe hertz, equal to cycles per second (or in this case, vibrationsper second).
Description : A cavity that vibrates at its natural frequency produces a louder sound than at other frequencies. What term is used to describe this phenomenon?
Last Answer : Resonance.
Description : In a crystal, an atom vibrates at a frequency determined by (a) the heat content of the crystal (b) the temperature of the crystal (c) the stiffness of the bonds it makes with neighbors
Last Answer : Ans: C
Description : Which of the following statements is/are true? A. Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction B. Shaft vibrates with maximum frequency when rotors ... C. Zero node behavior is observed in rotors rotating in opposite direction D. All of the above
Last Answer : A. Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction
Description : Which of the following statements is/are true? A) Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction B) Shaft vibrates with maximum frequency when rotors ... C) Zero node behavior is observed in rotors rotating in opposite direction D) All of the above
Last Answer : A) Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction
Description : A forced vibration system vibrates at A) Natural frequency of the system B) Frequency of external excitation C) Frequency of internal excitation D) None of the above
Last Answer : B) Frequency of external excitation
Description : When a two-degree-of-freedom system is subjected to a harmonic force, the system vibrates at the a. frequency of applied force b. smaller natural frequency c. larger natural frequency d. None of the above
Last Answer : a. frequency of applied force
Description : Which of the following statements is/are true? a. Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction b. Shaft vibrates with maximum frequency when rotors ... c. Zero node behavior is observed in rotors rotating in opposite direction d. All of the above
Last Answer : a. Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction
Last Answer : In a crystal, an atom vibrates at a frequency determined by the stiffness of the bonds it makes with neighbors.
Description : Is it a good idea to scratch my dog's chin until his leg vibrates like he is itching the ground?
Last Answer : I think you might be giving that dog a seizure!
Description : If my steering wheel vibrates/shakes while I am driving.. what could possibly be wrong?
Last Answer : Could be your tires. Have them checked and rotated. Might be your rotors.
Description : The inside of my head vibrates whenever I yawn or gag, sometimes it is so intense that I shed tears. What could be the cause?
Last Answer : Have you been to the doctor? That’s who you should be asking..
Description : I have a motorola krazer. How do I setup the phone to vibrate only. When someone calls in, the phone vibrates but then rings if I don't answer it. Also rings when a voicemail is left. How do I change the setting?
Last Answer : Without looking at a Motorola Phone in my hand, I can't recall the exact menu-steps to configure the settings; however, if the krazer is the same as past Motorola phones produced, you simply have to ... click the Volume Down button on the side of the handset until it's comlpetely off and on vibrate.
Description : What's at least 6 inches long, goes in your mouth, and is more fun if it vibrates? -Riddles
Last Answer : A toothbrush. Come on.
Description : which of these items vibrates because a light wave has formed?
Last Answer : an electric field
Description : What part of a ukulele vibrates?
Last Answer : Strings
Description : What happens when a window vibrates and the laser has been reflected off the window?
Last Answer : Need answer
Description : When the body vibrates under the influence of external force, then the body is said to be under ___________ . * 1 point (A) free vibrations (B) natural vibrations (C) forced vibrations (D) damped vibrations
Last Answer : (C) forced vibrations
Description : The rotating shaft or rotor vibrates with excessive lateral vibration at angular speed at which occurs is called as A) rotating speed B) critical speed C) vibrating speed D) None of the above
Last Answer : B) critical speed
Description : When a system vibrates in a fluid medium, the damping is (a) viscous (b) Coulomb (c) solid
Last Answer : (a) viscous
Description : A scale in a lab measures the mass of object consistently more by 500 g than their actual mass. How would you describe the scale in terms
Last Answer : A scale in a lab measures the mass of object consistently more by 500 g than their actual ... describe the scale in terms of accuracy and precision?
Description : A square object of 4 mm is subjected to a force of 3000 N. What is the maximum allowable shear stress acting on it? a. 250.14 mm2 b. 281.25 mm2 c. 400.32 mm2 d. 500 mm2
Last Answer : b. 281.25 mm2
Description : The frequency of a wave travelling at a speed of 500 ms-1 is 25 Hz. Its time period will be ______. (i) 20 s (ii) 0.05 s (iii) 25 s (iv) 0.04 s
Last Answer : (iv) 0.04 s
Description : A tuned circuit has a Q of 100 at its resonant frequency of 500 kHz. Its bandwidth is _____kHz. (A) 50000 (B) 0.2 (C) 600 (D) 5
Last Answer : A tuned circuit has a Q of 100 at its resonant frequency of 500 kHz. Its bandwidth is 5 kHz.
Description : Two waves have frequency of 500 Hz. One is set at its maximum value whereas the other at zero. The phase angle between them will be
Last Answer : Two waves have frequency of 500 Hz. One is set at its maximum value whereas the other at zero. The phase angle between them will be 90o
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 : 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 : The bandwidth of C-band satellite frequency band in U.S. A. 500 GHz B. 1000 GHz C. 1000 MHz D. 500 MHz
Last Answer : D. 500 MHz
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 : What is the typical frequency used for communicating to submerged submarines? A. 100 Hz B. 500 Hz C. 4 kHz D. 200 Hz
Last Answer : A. 100 Hz
Description : What is the typical center frequency spacing between adjacent channels (transponders) in satellites? A. 36 MHz B. 40 MHz C. 500 MHz D. 4 MHz
Last Answer : B. 40 MHz
Description : A vibrating machine of 100 kg is mounted on a rubber pad which has stiffness of 500 N/m. Determine force transmitted to the foundation if the unbalanced force 500 N acts on it. The frequency ratio (ω/ω n ) is 1.5 and ξ = 0.5 A. 461.62 N B. 400.23 N C. 450 N D. Insufficient data
Last Answer : A. 461.62 N
Description : The external exciting frequency of the system having natural frequency 15 Hz is 10 Hz. The frequency ratio will be A. 1.500 B. 0.667 C. 0.150 D. None
Last Answer : B. 0.667
Description : If the frequency spectrum of a signal has a bandwidth of500 Hz with thehighest frequency at 600 Hz, what shouldbe the samplingrate, according to the Nyquist theorem? A) 200 samples/s B) 500 samples/s C) 1000 samples/s D) 1200 samples/s
Last Answer : 1200 samples/s
Description : An eight stage ripple counter uses a flip-flop with propagation delay of 75 nanoseconds. The pulse width of the strobe is 50ns. The frequency of the input signal which can be used for proper operation of the counter is approximately (A) 1 MHz. (B) 500 MHz. (C) 2 MHz. (D) 4 MHz.
Last Answer : Maximum time taken for all flip-flops to stabilize is 75ns x 8 + 50 = 650ns. Frequency of operation must be less than 1/650ns = 1.5 MHz.
Description : Human ear is most sensitive to noise in the following frequency ranges: (A) 1-2 KHz (B) 100-500 Hz (C) 10-12 KHz (D) 13-16 KHz
Last Answer : (A) 1-2 KHz
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 : 24 cm
Description : For a 500 Hz frequency excitation, a 50 km long power line will be modeled as
Last Answer : For a 500 Hz frequency excitation, a 50 km long power line will be modeled as long line
Description : Published the list of monthly gurus of Ans Bangla of March 2020 ? After discussion and review, the list of winners of Ans Bangla Monthly of March 2020 was finalized. This list has been prepared by verifying the ... stated. First Winner - Rs. 500 Second Winner - Rs. 350 Third Winner - Rs .
Last Answer : answer:
Description : The list of monthly gurus for January 2020 has been published ? After discussion and review, the list of winners of Ans Bangla Monthly of January 2020 was finalized. This list has been prepared only after verifying ... as stated. First Winner - Rs. 500 Second Winner - Rs. 350 Third Winner - Rs .
Description : A company has 500 shares of face value Rs.50 in which Rs.30 is paid-up. The company collects Rs.12,000 as the second instalment. What is the paid-up v
Last Answer : A company has 500 shares of face value Rs.50 in which Rs.30 is paid-up. The company collects Rs.12, ... . What is the paid-up value of each share now?
Description : If delaysare recorded as 10 bit numbers in a 50 router network, and delay vectorsare exchanged twicea second,how muchbandwidth per fill duplex line is occupied by the distributedrouting algorithm? A. 500 bps B. 1500 bps C. 5 bps D. 1000 bps
Last Answer : 1000 bps
Description : A pure ALOHA Network transmits 200 bit frames using a shared channel with 200 Kbps bandwidth. If the system (all stations put together) produces 500 frames per second, then the throughput of the system is ______. a. 0.384 b. 0.184 c. 0.286 d. 0.58
Last Answer : b. 0.184
Description : A sender uses the Stop-and-Wait ARQ protocol for reliable transmission of frames. Frames are of size 1000 bytes and the transmission rate at the sender is 80 Kbps (1Kbps = 1000 bits/second). Size of ... is lost, the sender throughput is __________ bytes/second. a. 2500 b. 2000 c. 1500 d. 500
Last Answer : a. 2500
Description : In a token ring network the transmission speed is 10^7 bps and the propagation speed is 200 metres/micro second. The 1- bit delay in this network is equivalent to: a. 500 metres of cable. b. 200 metres of cable. c. 20 metres of cable. d. 50 metres of cable
Last Answer : c. 20 metres of cable.
Description : In plane transmission grating, the angle of diffraction for second order maxima for wavelength 5 x 10 -5 cm is 30 0. Calculate the number of lines in one centimeter of the grating surface. A. 1000 lines/cm B. 5000 lines/cm C. 500 lines/cm D. 10000 lines/cm
Last Answer : B. 5000 lines/cm
Description : The speed of sound (at sea level) in air is: w) 340 meters per second x) 400 meters per second y) 500 meters per second z) 760 kilometers per second
Last Answer : ANSWER: W -- 340 METERS PER SECOND
Description : A bullet is fired with a muzzle velocity of 1000 meters per second from a rifle clamped to a window 4.9 meters above ground level. Neglecting air resistance, the horizontal distance from the rifle at which the bullet will strike the ground is w) 4.9 meters x) 500 meters y) 1000 meters z) 4900 meters
Last Answer : ANSWER: Y -- 1000 METERS
Description : A 500 kilogram car moving at 20 meters per second strikes a stone wall and is brought to a halt in 0.1 second. The average force of the car on the wall during impact is: w) 10 Newtons x) 1000 Newtons y) 10,000 Newtons z) 100,000 Newtons
Last Answer : ANSWER: Z -- 100,000 NEWTONS
Description : An analog signal carries 4 bits in each signal unit. If 1000 signal units are sent per second, then baud rate and bit rate of the signal are ............... and .............. (A) 4000 bauds \ sec & ... (B) 2000 bauds \ sec & 1000 bps (C) 1000 bauds \ sec & 500 bps (D) 1000 bauds \ sec & 4000 bps
Last Answer : (D) 1000 bauds \ sec & 4000 bps Explanation: Bit rate is the number of bits per second. Baud rate is the number of signal units per second. Baud rate is less than or equal to the bit rate. Baud rate = 1000 bauds per second (baud/s) Bit rate = 1000 x 4 = 4000 bps