Description : A radiating source that radiates energy equally in all directions is known as what type of radiator?
Last Answer : Isotropic radiator.
Description : What type of antenna radiates in and receives energy from all directions at once?
Last Answer : Omnidirectional.
Description : Fire-control tracking radar most often radiates what type of beam?
Last Answer : A narrow circular beam.
Description : What is the front-to-back ratio of an antenna which radiates 500 watts in a northernly direction and 50 watts in a southernly direction? A. 25000 dB B. 10 dB C. 100 dB D. 20 dB
Last Answer : B. 10 dB
Description : It is the ratio of the power density radiated in a particular direction to the power density radiated to the same point by a reference antenna, assuming both antennas are radiating the same amount of power
Last Answer : directive gain
Description : A flashlight is an example of what type of radiator?
Last Answer : Anisotropic radiator.
Description : What optical source radiates light uniformly in all directions? A. Isotropic source B. Lambertian source C. Voltage source D. Ideal source
Last Answer : B. Lambertian source
Description : It is the intensity of a radiating source. a. Specific Brightness b. Radiance c. Surface Brightness d. All of these
Last Answer : All of these
Description : The product of the radiated RF power of a transmitter and the gain of the antenna system in a given direction relative to an isotropic radiator is called ____. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power
Last Answer : B. Effective Isotropic Radiated Power (EIRP)
Description : When is it useful to refer to an isotropic radiator? A. When comparing the gains of directional antennas B. When testing a transmission line for standing wave ratio C. When (in the northern ... ) directing the transmission in a southerly direction D. When using a dummy load to tune a transmitter
Last Answer : A. When comparing the gains of directional antennas
Description : Any energy which radiates in the form of radio waves, infrared waves, light waves, x-rays, etc. A. Radiant energy B. Electromagnetic C. Heat D. Ultraviolet
Last Answer : B. Electromagnetic
Description : A device that radiates electromagnetic energy and or intercepts electromagnetic radation. A. Antenna B. Transmitter C. Transmission line D. Transceiver
Last Answer : A. Antenna
Description : Checking of radiating heat by atmospheric dust, water vapour, ozone, `CO_(2)` etc., is known as:
Last Answer : Checking of radiating heat by atmospheric dust, water vapour, ozone, `CO_(2)` etc., is known as ... effect C. Green house effect D. Solar effect.
Last Answer : Checking of radiating heat by atmospheric dust, water vapour, ozone, `CO_(2)` etc., is known ... effect C. Radioactive effect D. Green house effect.
Description : The idea that electrons revolved in orbits around the nucleus of an atom without radiating energy away from the atom was postulated by: w) Thompson x) Bohr y) Rutherford z) Einstein
Last Answer : ANSWER: X -- BOHR
Description : Why does using ac vice dc bias voltage result in a stronger output signal?
Last Answer : Because an ac bias voltage of the proper frequency and level places the input signal away from both steps in the magnetism curve. The result is two undistorted output signals that are combined into one strong output.
Description : The water in an open pond remains cool even in hot summer because (a) Of continuous evaporation of water (b) Water radiates heat more rapidly than the atmosphere (c) Water absorbs heat less rapidly than the atmosphere (d) Water absorbs heat more rapidly than the atmosphere
Last Answer : Ans:(c)
Description : What is Radiates ?
Last Answer : Radiates means to radiate.
Description : Heat that radiates back from greenhouse gases (green house flux) causes
Last Answer : Heat that radiates back from greenhouse gases (green house flux) causes A. Addition global warming B. Thermal inversion C. Eutrophication D. Smog
Description : What The sun heats the surface of the earth and the earth radiates heat back out into the atmosphere?
Last Answer : Need answer
Description : What star shaped structure radiates from each centriole during metaphase?
Description : even cold air radiates?
Last Answer : Heat
Description : Airmass near to the earth's surface is warmer because it – (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun
Last Answer : (3) is warmed by terrestrial radiation Explanation: The air close to the ground is warmer because the earth's surface is what heats the atmosphere, for the most part. Terrestrial radiation accounts for ... Earth's surface. The further away from the earth's surface we go, the cooler the atmosphere.
Description : What antenna radiates equally in all directions? A. Vertical antenna B. isotropic antenna C. Horizontal antenna D. Dipole antenna
Last Answer : B. isotropic antenna
Description : A simple half-wavelength antenna radiates the strongest signal A. at 45 degrees to its axis B. parallel to its axis C. at right angles to its axis D. at 60 degrees to its axis
Last Answer : C. at right angles to its axis
Description : The antenna radiates _____ polarized waves when the transmitter antenna is horizontally installed. A. Vertically B. negatively C. horizontally D. circularly
Last Answer : C. horizontally
Description : Which antenna radiates an omnidirectional pattern in the horizontal plane with vertical polarization? A. Marconi antenna B. Discone antenna C. Horn antenna D. Helical antenna
Last Answer : A. Marconi antenna
Description : The sound power level of a jet plane flying at a height of 1 km is 160 dB. What is the maximum sound pressure level on the ground directly below the plane assuming that the aircraft radiates sound equally in all directions? A. 59.1 dB B. 69.1 dB C. 79.1 dB D. 89.1 dB
Last Answer : D. 89.1 dB
Description : It is the resistance that, if it replaced the antenna, would dissipate exactly the same amount of power that the antenna radiates
Last Answer : . Radiation resistance
Description : Airmass near to the earth’s surface is warmer because it (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun
Last Answer : is warmed by terrestrial radiation
Description : In a hot water heating system, there is cylindrical pipe of length 28 m and diameter 5 cm. Find the total radiating surface in the system. -Maths 9th
Last Answer : Height of cylindrical pipe = Length of cylindrical pipe = 28m Radius of circular end of pipe = diameter/ 2 = 5/2 cm = 2.5cm = 0.025m Now, CSA of cylindrical pipe = 2πrh, where r = radius and h = height of ... = 2 (22/7) 0.025 28 m2 = 4.4m2 The area of the radiating surface of the system is 4.4m2.
Description : Rate of cooling depends on the (1) Temperature difference between the body and the surroundings (2) Nature of the radiating surface (3) Area of the radiating surface (4) All of these
Last Answer : (4) All of these Explanation: Newton's Law of Cooling states that the rate of temperature of the body is proportional to the difference between the temperature of the body and that of the ... Specific heat of the radiating body; Temperature of radiating body and ♦ Temperature of the surrounding.
Description : In the case if Marconi antenna, the actual length if the radiating element is A. one-half wavelength B. one-quarter wavelength C. one wavelength D. one-eight wavelength
Last Answer : B. one-quarter wavelength
Description : What is a dummy antenna? A. One which is used as a reference for gain measurements B. And antenna used for hand-held radio C. An non-directional transmitting antenna D. A non-radiating load for a transmitter used for testing
Last Answer : D. A non-radiating load for a transmitter used for testing
Description : The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoff’s law. (A) Wavelength of radiation (B) Nature of the body (C) Temperature of the body (D) None of these
Last Answer : (C) Temperature of the body
Description : Solid angle subtended by the finite surface at the radiating element is (A) Called the view factor (B) Called the angle of vision (C) Proportional to the square of the distance between surfaces (D) Expressed in terms of radians
Last Answer : (B) Called the angle of vision
Description : Pick out the correct statement. (A) Higher is the temperature of the radiating body, higher is the wavelength of radiation (B) Logarithmic mean area is used for calculating the heat flow rate ... ) Solid angle subtended by the finite surface at the radiating element is called the angle of incidence
Last Answer : (B) Logarithmic mean area is used for calculating the heat flow rate through a thick walled cylinder
Description : Which of the following terms refers to disease of a nerve root? a) Radiculopathy When the patient reports radiating pain down the leg, he is describing radiculopathy. b) Involucrum ... cavity. d) Contracture Contracture refers to abnormal shortening of muscle or fibrosis of joint structures.
Last Answer : a) Radiculopathy When the patient reports radiating pain down the leg, he is describing radiculopathy.
Description : Knots in timber are (A) Defects caused by crushing fibres (B) Splits radiating from the centre (C) Speckled strains (D) Signs of branches cut off
Last Answer : Answer: Option D
Description : Nurse Fely did her admission. She understands that the pain is characterized as A. Tenderness that is generalized in the upper epigastric area B. Pain in the left upper quadrant radiating to the ... to the back D. Tenderness and rigidity at the upper right abdomen radiating to the midsternal area
Last Answer : D. Tenderness and rigidity at the upper right abdomen radiating to the midsternal area
Description : Band loss is ∙ a. A reduction in transmitter power caused by earth’s surface curvature ∙ b. A reduction in strength of the signal caused by folded dipole bends ∙ c. An attenuation increase caused by bends radiating from the side of the fiber ∙ d. All of these
Last Answer : c. An attenuation increase caused by bends radiating from the side of the fiber
Description : Which of following statement is incorrect according to BBCR Repertory Options: 1) Radiating pain is given under Sensation & Complaints in General 2) Typhoid fever is given under Fever - Pathological types 3) Pregnancy is given under Sexual Impulse 4) Tetters is given in Skin & Exterior body
Last Answer : Correct Answer: 3) Pregnancy is given under Sexual Impulse
Description : yo presented by hx of syncope when he do excurses and there was hix of same complain when he on rest . and there is chest pain on ex. There was ejection systolic murmur ... t changing and there is lf atrium enlargement Aortic stenosis p.s hypertrophic cardiomyopathy constrictive cardiomyopathy
Last Answer : Aortic stenosis
Description : Benign migratory glossitis or Geographic Tongue, manifests itself in the oral cavity as, A. Irregularly outlined areas of hyperkeratosis of the dorsal surface of the tongue B. Furrows outlined the ... (fissures) radiating from a central fissure G. Irregular area in the midline of the tongue
Last Answer : C. Loss (atrophy) of filiform papillae in multiple irregularly outlined areas
Description : The process of addition of impurity in pure semiconductor is : a) Doping b) Radiating c) Mixing d) Insulating
Last Answer : d) Insulating
Description : Hepatic cells of rabbit are in the form of (a) Rounded hepatocytes (b) Irregular hepatocytes (c) Discoidal hepatocytes (d) Polyhedral radiating hepatocytes
Last Answer : (d) Polyhedral radiating hepatocytes
Description : During the decoding process, the A)intensity of the transmission becomes stronger. B)receiver attempts to convert signs into concepts and ideas. C)source attempts to convert signs into concepts and ideas. D)receiver filters noise from the feedback.
Last Answer : B)receiver attempts to convert signs into concepts and ideas.
Description : A sound wave that is reflected back toward the source is known as what type of sound?
Last Answer : Echo.
Description : What type of antenna has all elements connected to the same energy source?
Last Answer : Driven Array.