Description : The signal from a satellite is normally aimed at a specific area called the ________
Last Answer : footprint
Description : “When visible light of high frequency electromagnetic radiation illuminates a metallic surface, electrons are emitted”
Last Answer : Plank’s law
Description : An area on earth covered by a satellite radio beam is called ____. A. SSP B. Region C. footprint D. primary area
Last Answer : C. footprint
Description : The earth area covered by a satellite radio beam. A. Beamwidth B. Bandwidth C. Footprint D. Zone
Last Answer : C. Footprint
Description : 7.Fine beam of light entering through a small hole in a dark room,illuminates the particles in its path.Name the process associated and Explain. -Chemistry
Last Answer : When fine beam of light entering through a small hole in a dark room, it illuminates the particle in its paths because of collision of particles of air and dust. This happens because of the Tyndall effect.
Description : The head light of vehicles should be such that its lower beam illuminates objects at (A) 10 m (B) 20 m (C) 30 m (D) 40 m
Last Answer : Answer: Option C
Description : What distinguishes digital radio systems from conventional analog communications system?
Last Answer : the nature of the modulating signal
Description : In a radio receiver with simple AGC:
Last Answer : an increase in signal strength produces more AGC
Description : I have dark brown and white oval shaped spots on my Ruellia Mexican Petunia tree, what are they
Last Answer : Need Answer
Description : what berry bush has red berries that turn blue in groups of three and eye shaped oval green leaves?
Last Answer : I would not eat them until you know exactly what they are.............take a branch to a grower and ask him...............it could be wild blueberries.............they are much ... ............there are also berries that are poisonious..........I would investigate further before eating them.
Description : I need help identifying a bush with small purple berries and oval shaped leaves
Description : Pluto has mean diameter of 2,300 km and very eccentric orbit (oval shaped) around the Sun, with a perihelion (nearest) distance of 4.4 × 10^9 km
Last Answer : Pluto has mean diameter of 2,300 km and very eccentric orbit (oval shaped) around the Sun, ... Assume that distance from the Sun can be neglected.
Description : Is a rectangular or oval shaped table best suited for a small Dining Room?
Last Answer : An oval shaped table in a small dining room will make the room look a little less crowded.
Description : The sun appears oval shaped or flattened due to (a) dispersion (b) scattering (c) atmospheric refraction (d) cannot say
Last Answer : (c) atmospheric refraction
Description : How is the collector lead identified on an oval-shaped transistor?
Last Answer : By the wide space between the collector lead and the other two leads (emitter and base)
Description : The magnetic field of an antenna is perpendicular to the earth. The antenna’s polarization ___
Last Answer : is horizontal
Description : A GEO is at the ________ orbit and revolves in phase with Earth.
Last Answer : equatorial
Description : Low-Earth-orbit (LEO) satellites have _____ orbits.
Last Answer : polar
Description : Bluetooth is a _______ technology that connects devices (called gadgets) in a small area
Last Answer : Wireless LAN
Description : In changing the frequency of a cavity, what is accomplished by placing a nonmagnetic slug in the area of maximum H lines
Last Answer : Inductive Coupling
Description : ____ is a virtual-circuit wide-area network that was designed in response to demands for a new type of WAN in the late 1980s and early 1990s.
Last Answer : . Frame Relay
Description : A 500 W bulb fitted with a reflector illuminates an area of 2 m x 2 m with an average illumination of 500 lux. The efficiency of the reflector is 50%. The efficiency of the bulb in lumens/watt is :
Last Answer : A 500 W bulb fitted with a reflector illuminates an area of 2 m x 2 m with an average illumination of 500 lux. The efficiency of the reflector is 50%. The efficiency of the bulb in lumens/watt is : 8
Description : The Farakka Project la mainly aimed towards (a) irrigating more land in West Bengal (b) utilizing maximum of Ganga water (c) preserving the port of Kolkata (d) production of electricity
Last Answer : Ans: (c)
Description : The Koal Project is aimed towards (a) irrigation (b) drainage and power generation (c) power generation and load control (d) irrigation, flood control and power generation
Last Answer : Ans: (d)
Description : A ____ is a set of activities which are networked in an order and aimed towards achieving the goals of a project. (A) Project (B) Process (C) Project management (D) Project cycle
Last Answer : (A) Project
Description : A is a set of activities which are networked in an order and aimed towards achieving the goals of a project. (A)Project (B)Process (C)Project management (D)Project cycle
Last Answer : (A)Project
Description : A is a set of activities which are networked in an order and aimed towards achieving the goals of a project. A. Project B. Process C. Project management D. Project cycle
Last Answer : A. Project
Description : An area on the surface of the earth within which the bore sight of the steerable satellite beam intended to be pointed A. Effective boresight area B. Countour boresight are C. Coordination boresight are D. Equivalent boresight area
Last Answer : A. Effective boresight area
Description : The line bisecting the major lobe, or pointing from the center of the antenna in the direction of maximum radiation is called _____
Last Answer : line of shoot
Description : The point on the antenna where the transmission line is connected is called _____
Last Answer : feedpoint
Description : The process of moving from one energy level to another is called __
Last Answer : Absorption
Description : The process of decaying from one energy level to another energy level is called _______
Last Answer : Spontaneous emission
Description : Any energy above the ground state is called ________
Last Answer : excited state
Description : Optical power is sometimes called ____
Last Answer : Radiant flux
Description : A waveguide may also be terminated in a resistive load that is matched to the characteristic impedance of the waveguide. The resistive load is most often called a _____
Last Answer : Dummy resistor
Description : Emphasizing low-level signals and compressing higher level signals is called:
Last Answer : companding
Description : An IC that contains A/D and D/A converters, companders, and parallel-to-serial converters is called
Last Answer : . Codec
Description : The PCM code for each channel occupies a fixed time slot called:
Last Answer : Epoch
Description : The time it takes to transmit one TDM frame is called ______
Last Answer : Frame time
Description : IEEE has defined the specifications for a wireless LAN, called _______, which covers the physical and data link layers.
Last Answer : . IEEE 802.11
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 : The property of interchangeability for the transmitting and receiving operations is known as ____
Last Answer : reciprocity
Description : The fields surrounding the antenna do not collapse their energy back into the antenna but rather radiate it out in space
Last Answer : radiation field
Description : It is the ratio of the radiated to the reflected energy:
Last Answer : Radiation efficiency
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 : Plots of field strength or power density with respect to the value at a reference point.
Last Answer : relative radiation pattern
Description : The radiation pattern plotted in terms of electric field strength or power density
Last Answer : absolute radiation pattern
Description : A special type of transmission line that consist of conducting metallic tube through which high frequency electromagnetic energy is propagated
Last Answer : waveguide
Description : If energy is applied at the geometrical center of antenna, the antenna is said to be ___
Last Answer : center-fed
Description : The radiation pattern of collinear and a broadside antenna is __
Last Answer : bidirectional