Description : What is the polarization of the energy radiated by a vertical slot?
Last Answer : Horizontal.
Description : _____________ can be defined as a specifically evolved work plan densed to achieve a specific objective within a specific period of time A. Idea generation. B. Opportunity Scanning. C. Project. D. Strategy.
Last Answer : C. Project.
Description : When a wavefront is radiated into a waveguide, what happens to the portions of the wavefront that do not satisfy the boundary conditions?
Last Answer : Decrease to zero.
Description : What are three ways of controlling radiated emi during transmission?
Last Answer : a) physical separation of the antenna (b) limiting bandwidth of the antenna (c) use of directional antennas
Description : If a target is on the bearing axis of the radiated beam, what is the input to the bearing IF channel?
Last Answer : Zero.
Description : What width is the pulse radiated by fire-control tracking radar?
Last Answer : Very narrow.
Description : How many major lobes are radiated by a parabolic reflector?
Last Answer : One
Description : What is the term that is used to describe narrowness in the radiated beam of an antenna?
Last Answer : Antenna directivity.
Description : What are the two basic methods of scanning?
Last Answer : Mechanical and electronic.
Description : How does the operator of a single-lobe scanning system determine when the target moves off the lobe axis?
Last Answer : The reflected signals decrease in strength.
Description : What is the simplest type of scanning?
Last Answer : Single lobe.
Description : This first step inthe transaction processing cycle captures businessdata throughvarious modes suchas optical scanning orat an electronic commerce website– (A) Document and report generation (B) Database maintenance (C) Transaction processing startup (D) Data Entry
Last Answer : Data Entry
Description : What type(s) of flux should never be used on electronic equipment?
Last Answer : Chloride or (acid) and organic.
Description : Atmospheric interference with the travel of electromagnetic energy increases with what rf energy characteristic?
Last Answer : Frequency.
Description : Specify the mechanism that SLDs lack that is required by laser diodes to achieve lasing.
Last Answer : SLDs have no built-in optical feedback mechanism.
Description : Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?
Last Answer : Receiver sensitivity.
Description : The type of spring used to achieve any linear or non-linear load-deflection characteristic is (A) Spiral spring (B) Non-ferrous spring (C) Belleville (coned disk) spring (D) Torsion spring
Last Answer : (C) Belleville (coned disk) spring
Description : People in the marketing department are having difficulty estimating the level of effort needed to achieve advertising goals. This problem is characteristic of the __________ approach to advertising appropriation. A) ... B)match -competition C)arbitrary D)objective -and -task E)percent -of-sales
Last Answer : D)objective -and -task
Description : A load of 200 ohm is used to match 300 ohm transmission line to achieve SWR=1. Find out the required characteristic impedance of a quarter of a quarter wave transformer connected directly to the load.
Last Answer : Solution :
Description : Is solar energy radiated?
Last Answer : Yes, among other ways, solar energy is radiated. That is whatheats up the Earth and the other planets, mostly.
Description : Which of the following reaction is the main cause of energy radiated from Sun? (1) Nuclear fission (2) Nuclear fusion (3) Chemical reaction (4) Diffusion reaction
Last Answer : (2) Nuclear fusion Explanation: The Sun is a main-sequence star, and thus generates its energy bynuclear fusion of hydrogen nuclei into helium. In its core, the Sunfuses 620 million metric tons of hydrogen each second.
Description : How will you increase the gain of an antenna? A. By adding several antennas in parallel B. By focusing the radiated energy in one desired direction C. By making antenna rods thicker D. By making the antenna size larger
Last Answer : B. By focusing the radiated energy in one desired direction
Description : What do you call the energy that was not radiated into space or completely transmitted? A. Incident waves B. Captured waves C. Standing waves D. Modulated waves
Last Answer : C. Standing waves
Description : Energy that has neither been radiated into space nor completely transmitted. A. Captured waves B. Incident waves C. Standing waves D. Modulated waves
Description : The energy radiated from a surface Q at absolute temperature T is related as (A) Q ∝ T 2 (B) Q ∝ T 4 (C) Q ∝ T 3 (D) None of these
Last Answer : (B) Q ∝ T
Description : The atmosphere near the earth's surface is heated from below. Which of the following does not significantly contribute to this heating -----------? A. Conduction of heat upward from a ... infrared energy that has been radiated from the surface D. Heat energy from the earth's interior (Answer)
Last Answer : D. Heat energy from the earth’s interior (Answer)
Description : It is the ratio of the radiated to the reflected energy:
Last Answer : Radiation efficiency
Description : What process produces most of the energy that is radiated by the Sun? w) gravitational contraction x) chemical combustion y) nuclear fusion z) nuclear fission
Last Answer : ANSWER: Y -- NUCLEAR FUSION
Description : To develop the correct mathematical description of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature, Planck found it necessary to assume that the molecular ... units or quanta y) radiant energy in a continuous form z) none of the above.
Last Answer : ANSWER: X -- RADIANT ENERGY IN DISCRETE UNITS OR QUANTA
Description : The potential difference across a 4 ohm resistor is 20 volts. Assuming that all of the energy dissipated by this resistor is in the form of heat, how many joules of heat are radiated in 10 seconds?
Last Answer : ANSWER: 1000 JOULES
Description : The energy radiated by Sun on a bright Sunny day is approximately: (A) 700 W/m² (B) 800 W / m² (C) 1 kW / m² (D) 2 kW / m²
Last Answer : The energy radiated by Sun on a bright Sunny day is approximately: 1 kW / m²
Description : What percent of the input energy is radiated by filament lamps ? (1) 2 to 5 percent (2) 10 to 15 percent (3) 25 to 30 percent (4) 40 to 50 percent
Last Answer : less than 10 percentage
Description : A patient with gross fecal contamination and peritonitis from a ruptured sigmoid diverticulum has his midline wound left open to heal by secondary intention. Which of the following statement(s) describes this ... of a wound to form granulation tissue is dependent on the blood supply of the tissue
Last Answer : Answer: b, d Open wounds, whether they be ulcers or open surgical incisions closing by secondary intention, heal with the same sequence of inflammation, matrix deposition, epithelialization ... via bacterial and phagocytic cell products such as proteases, collagenases, elastases, and other enzymes
Description : Most hormone receptors are localized on the cell membrane and transduce hormone binding into altered levels of intracellular messengers. A limited number of intracellular receptors do exist. Which of ... protein serves as an inhibitor protein blocking the DNA-binding domain of the steroid receptor
Last Answer : Answer: a, d Although most hormone and other messenger receptors are extracellular, intracellular receptors have been identified. The hormone messengers involved for these receptors are primarily ... DNA-binding domain of the receptor. Activation involves the dissociation of the inhibitor protein
Description : . What characteristic of an RL circuit allows it to act as an integrator?
Last Answer : The ability of the inductor to oppose a change in current.
Description : What characteristic of sound enables a person to distinguish one musical instrument from another, if they are all playing the same note?
Last Answer : Quality.
Description : Cold-cathode tubes can be used as voltage regulators because of what characteristic?
Last Answer : They have the ability to maintain a constant voltage drop across the tube despite changes in current flow.
Description : The spectrum of a radar transmitter describes what characteristic of the output pulse?
Last Answer : Frequency distribution
Description : What characteristic is determined by the time required for a voltage wave to travel from the input end of an artificial transmission line to the output end and back again?
Last Answer : Pulse width
Last Answer : Pulse width.
Description : The Doppler variation is directly proportional to what radar contact characteristic?
Last Answer : Velocity.
Description : What is the range of the characteristic impedance of lines used in actual practice?
Last Answer : Between 50 and 600 ohms.
Description : What symbol is used to designate the characteristic impedance of a line, and what two variables does it compare?
Last Answer : Z0 and it is the ratio of E to I at every point along the line.
Description : What characteristic of a gunn oscillator is inversely proportional to the transit time of the domain across the semiconductor?
Last Answer : The frequency.
Description : What characteristic allows the same antenna to both transmit and receive?
Last Answer : Reciprocity.
Description : In swept-frequency testing the impedance of a transmission line, what electrical characteristic is actually being measured?
Last Answer : Swr on the transmission line.
Description : A spectrum analyzer is designed to display what signal characteristic?
Last Answer : Amplitude versus frequency (the frequency domain of the signals).
Description : The suppressor grid is added to a tetrode to reduce what undesirable characteristic of tetrode operation?
Last Answer : Secondary emission.
Description : What gyro characteristic provides the basis of the operation of a rate gyro?
Last Answer : Precession.
Description : What motor characteristic is affected by counter emf?
Last Answer : Speed.