Description : . What three factors determine the amplitude of the voltage induced into a stator winding?
Last Answer : The amplitude of the primary voltage, the turns ratio, and the angular displacement between the rotor and the stator winding.
Description : What three main factors determine the amount of refraction in the ionosphere?
Last Answer : (a) density of ionization of the layer (b) frequency (c) angle at which it enters the layer
Description : . What are two of the three physical factors that determine the values of capacitance and inductance of a transmission line?
Last Answer : (1) Type of line used, (2) dielectric in the line, and (3) length of line.
Description : The way a magnetic head will be used determines how it is constructed. Name three factors that determine the final construction of a magnetic head.
Last Answer : a. Type of head (record, reproduce, or erase). b. Frequencies it will record or reproduce. c. Whether it will be used on a single or multitrack recorder.
Description : Factors that determine the radiation resistance of an antenna A. Transmission line length and height of antenna B. The location of the antenna with respect to nearby objects C. It is a constant for all antennas since it is physical D. Sunspot activity and the time of day
Last Answer : B. The location of the antenna with respect to nearby objects
Description : What factors determine the rigidity of a gyro?
Last Answer : Rotor speed, weight, shape.
Description : What factors determine the direction of rotation in a dc motor?
Last Answer : Direction of armature current, and direction of magnetic flux in field.
Description : What factors determine the value of the multiplier resistor?
Last Answer : The current required for full-scale deflection, and the range of the voltage to be measured.
Description : hat two factors determine the directivity pattern of the parasitic array?
Last Answer : Length of the parasitic element (tuning) and spacing between the parasitic and driven elements.
Description : What two factors determine the frequency of the output voltage of an alternator?
Last Answer : Speed of rotation and number of poles.
Description : What are the three parts of a complete antenna system?
Last Answer : Coupling device, feeder, and antenna.
Description : What is the result of an abrupt change in the size, shape, or dielectric of a waveguide?
Last Answer : Reflections.
Description : What determines the shape and size of a soldering iron tip?
Last Answer : The type of work to be done.
Description : When using an American Standard Wire Gauge to determine the size of a wire, where should you place the wire in the gauge to get the correct measurement?
Last Answer : In the parallel walled slot not the circular area.
Description : What type of transmission line is often used to connect a television set to its antenna?
Last Answer : Twin lead.
Description : What type of antenna has all elements connected to the same energy source?
Last Answer : Driven Array.
Description : What type of antenna radiates in and receives energy from all directions at once?
Last Answer : Omnidirectional.
Description : . If a basic half-wave antenna is mounted vertically, what type of radiation pattern will be produced?
Last Answer : Nondirectional.
Description : The Yagi antenna is an example of what type of array?
Last Answer : Multielement parasitic array.
Description : What type of polarization should be used if an antenna is mounted on a moving vehicle at frequencies below 50 megahertz?
Last Answer : Vertical polarization.
Description : What type of amplifier would be used to amplify the signal from a radio antenna?
Last Answer : An rf voltage amplifier.
Description : X rays are used in endodontic treatment to: A. Aid in the diagnosis of periapical hard tissue lesion B. Determine the number, location, shape, size and direction of roots and root canals C. Confirm ... root canals D. Evaluate the adequacy of the complete root canal filling E. All of the above
Last Answer : E. All of the above
Description : If the scaling factors values Sx and Sy < 1 then a.It reduces the size of object b.It increases the size of object c.It stunts the shape of an object d.None
Last Answer : a.It reduces the size of object
Description : Which of the following factors affect the mechanical properties of a material under applied loads? a) Content of alloys b) Grain size c) Imperfection and defects d) Shape of material
Last Answer : d) Shape of material
Description : Stoke's law states that the velocity at which a grain settles out of suspension, the other factors remaining constant, is dependent upon (A) Shape of grain (B) Weight of grain (C) Size of grain (D) Shape, size and weight of grain
Last Answer : Answer: Option D
Description : Which of the following factors can affect the shape and size of the pulp canal: A. Chemical irritation and caries B. Trauma and function C. Attrition, wear and aging of the patient D. All of the above
Last Answer : D. All of the above
Description : State the factors to be considered for selection of shape and size of the car of elevator.
Last Answer : The size and shape of elevator car depends on following factors: i) No. of passenger to be carried: While selecting the size of car it is a usual practice to allow. A Space of 2 Sq. ... of elevator depends on space available in building. iii) Type of building iv) Application of elevator
Description : What composite field (composed of E and H fields) is found stored in the antenna?
Last Answer : Induction field.
Description : Which two composite fields (composed of E and H fields) are associated with every antenna?
Last Answer : Induction field and radiation field.
Description : If a transmitting antenna is placed close to the ground, how should the antenna be polarized to give the greatest signal strength?
Last Answer : Vertically polarized.
Description : The power gain of an antenna is directly related to what other antenna property?
Last Answer : Directivity.
Description : What radar component permits the use of a single antenna for both transmitting and receiving?
Last Answer : Duplexer.
Description : What is the result of an impedance mismatch between a receiver or transmitter and its transmission line or antenna?
Last Answer : High vswr, which equates to poor reception or a loss of power output.
Description : All the power sent down a transmission line from a transmitter can be transferred to an antenna under what optimum conditions?
Last Answer : When the characteristic impedance of the transmission line and the load impedance are equal.
Description : What term is used for the end of the transmission line that is connected to an antenna?
Last Answer : Output end, receiving end, load end and sink.
Description : What connecting link is used to transfer energy from a radio transmitter to its antenna located on
Last Answer : Transmission line.
Description : What determines the beam elevation angle of an antenna that is electronically scanned in elevation?
Last Answer : Frequency or phase of radiated energy.
Description : What is a set of antenna elements called?
Last Answer : Antenna Array.
Description : A horizontally truncated paraboloid antenna is used for what purpose?
Last Answer : Determine elevation.
Description : What characteristic allows the same antenna to both transmit and receive?
Last Answer : Reciprocity.
Description : What is the term that is used to describe narrowness in the radiated beam of an antenna?
Last Answer : Antenna directivity.
Description : What term is used to express the efficiency of an antenna?
Last Answer : Power gain or power ratio
Description : What precautions must be taken when sweeping a transmitting antenna?
Last Answer : You must ensure that power induced from any adjacent transmitting antennas does not damage your test equipment.
Description : What is the purpose of an antenna coupler
Last Answer : It matches the impedance of an antenna to that of a transmission line at any desired frequency.
Description : What is the function of an antenna patch panel?
Last Answer : To connect an antenna/transmission line to a receiver/transmitter.
Description : What is the radiation pattern of a quarter-wave antenna?
Last Answer : A circular radiation pattern in the horizontal plane, or same as a half wave.
Description : What is the simplest method of feeding power to the half wave antenna?
Last Answer : To connect one end through a capacitor to the final output stage of the transmitter.
Description : In which plane will the half-wave antenna be operating if it is mounted horizontally?
Last Answer : Vertical plane.
Description : What is the primary reason for the development of the turnstile antenna?
Last Answer : For omnidirectional vhf communications.
Description : What is the main disadvantage of the rhombic antenna?
Last Answer : It requires a large antenna site.