Description : . What causes ionization to occur in the ionosphere?
Last Answer : High energy ultraviolet light waves from the sun.
Description : How are the four distinct layers of the ionosphere designated?
Last Answer : D, E, F1, and F2 layers.
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 : The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the (A) Ionosphere (B) Troposphere (C) Stratosphere (D) None of these
Last Answer : (B) Troposphere
Description : 3 Diffusion of drugs across cell membrane: A. Is dependent upon metabolic activity of the cell B. Is competitively inhibited by chemically related drugs C. Is affected by extent of ionization of drug molecules D. Exhibits saturation kinetics
Last Answer : C. Is affected by extent of ionization of drug molecules
Description : The latitudinal extent of India is responsible for the variation in the climatic conditions which prevail in the country. -SST 10th
Last Answer : The Northern plains lie to north of the Tropic of Cancer in the Temperate Zone. The winters are much colder. South India lies below the Tropic of Cancer, in the tropics and gets the direct rays of the sun. Hence it is hot through most of the year. The winters are not so cold.
Description : . A batch reactor is characterised by (A) Constant residence time (B) Variation in extent of reaction and properties of the reaction mixture with time (C) Variation in reactor volume (D) Very low conversion
Last Answer : (B) Variation in extent of reaction and properties of the reaction mixture with time
Description : What are the three more common types of irregular variations in the ionosphere?
Last Answer : Sporadic E, sudden disturbances, and ionospheric storms.
Description : What are the two general types of variations in the ionosphere?
Last Answer : Regular and irregular variations.
Description : Where does the greatest amount of ionospheric absorption occur in the ionosphere?
Last Answer : Where ionization density is greatest.
Description : What factor determines whether a radio wave is reflected or refracted by the ionosphere?
Last Answer : Thickness of ionized layer.
Description : What is the height of the individual layers of the ionosphere?
Last Answer : D layer is 30-55 miles, E layer 55-90 miles, and F layers are 90- 240 miles.
Description : Once ionization has occurred in a thyratron, what control does the control grid have over the tube’s operation?
Last Answer : None.
Description : How may the tr tube ionization speed be increased?
Last Answer : Apply keep-alive voltage.
Description : What are the four classes of operation of a transistor amplifier?
Last Answer : A, AB, B, C.
Description : The solubility of the alkali metal carbonates (a) Decreases as we go down the group (b) Increases as we go down the group (c) Increases at first and then decreases (d) Does not show regular variation
Last Answer : Ans:(b)
Description : The resonant frequency of electron wobble can be changed by variation of what force?
Last Answer : The applied magnetic field.
Description : The Doppler variation is directly proportional to what radar contact characteristic?
Last Answer : Velocity.
Description : What component is used in a triode amplifier to convert variation in
Last Answer : A plate load resistor RL
Description : What term applies to the voltage variation from no-load to full-load conditions and is expressed as a percentage?
Last Answer : Voltage regulation.
Description : The variation in output voltage as the load changes is referred to as what? How is it expressed?
Last Answer : Voltage regulation. As a percentage.
Description : The main atmospheric layer near the surface of earth is a) Troposphere b) Mesosphere c) Ionosphere d) Stratosphere
Last Answer : a) Troposphere
Last Answer : In two part tariff, variation in load factor will affect operating or running charges.
Description : How does your self-image affect the extent to which you interact with others?
Last Answer : I think if your not comforitble in your own skin, you prob. wont interact with others well. You have to first accept yourself.
Description : How do the western disturbances affect the crops in north India? (a) They cause heavy damage to the standing crops (b) They bring in locusts which destroy the crops (c) They are beneficial to the crops by causing winter rain (d) They help in keeping the plants warm to some extent in winter
Last Answer : Ans: (c)
Description : What are four main causes of tape failure?
Last Answer : Normal wear, accidental damage, environmental damage, and winding errors.
Description : What is the purpose of using differential synchros instead of regular synchros?
Last Answer : Differential synchros can handle more signals than regular synchros and also perform addition and subtraction functions.
Description : Which of the following is true about Modern Annual Examination System? Options: A) It Encourages Attaining Knowledge By Cramming. B) It Doesn't Encourage The Habit Of Regular Study. C) It Doesn't Encourage Students To Attain Their Classes Regularly. D) All Of These
Last Answer : D) All Of These
Description : Let L be the language generated by regular expression 0*10* and accepted by the deterministic finite automata M. Consider the relation RM defined by M. As all states are reachable from the start state, RM has ................ equivalence classes. (A) 2 (B) 4 (C) 5 (D) 6
Last Answer : (D) 6
Description : Name the two classes of test equipment.
Last Answer : General-purpose electronic test equipment (GPETE) and special-purpose electronic test equipment (SPETE).
Description : Which of the two general classes of antennas is most often used with radar?
Last Answer : Directional.
Description : Given below is the representation of the extent of global diversity of invertebrates. What groups the four portions (A-D) represent respectively? A B C D A B C D (a) Insects Crusta- ... Molluscs Other Crusta- Insects animal ceans groups (d) Insects Molluscs Crusta- Other animal ceans groups
Last Answer : (d) Insects Molluscs Crusta- Other animal ceans groups
Description : If you had to disable one ability that you possess but it could not be one of your senses in its entirety nor something so insignificant that it didn't affect your regular life what would you choose?
Last Answer : I feel like I’ve already lost the ability to understand what the heck you’re talking about.
Description : What is the affect of office dental prophylaxis of regular six month intervals on children's oral health? A. Reduce caries incidence by approximately 30% B. Provide a long term improvement in ... term improvement in oral hygiene D. Prevent gingivitis E. Reduce the need for patient cooperation
Last Answer : C. Provide a short term improvement in oral hygiene
Description : How does density and temperature affect the velocity of sound?
Last Answer : Velocity increases as density decreases and temperature increases.
Description : How does temperature inversion affect radio transmission?
Last Answer : It can cause vhf and uhf transmission to be propagated far beyond normal line-of-sight distances.
Description : How does fog affect radio waves at frequencies above 2 gigahertz?
Last Answer : It can cause attenuation by absorbtion.
Description : How do raindrops affect radio waves?
Last Answer : They can cause attenuation by scattering.
Description : How does ftc affect receiver gain, if at all?
Last Answer : FTC has no effect on receiver gain
Description : How does the supply voltage affect the accuracy of Wheatstone bridge measurements?
Last Answer : As the supply voltage increases, bridge components may heat up and become less accurate.
Description : How does index matching gel affect the amount of coupling loss caused by (a) fiber separation, (b) lateral misalignment, and (c) angular misalignment?
Last Answer : (a) Reduces coupling loss, (b) does not change coupling loss, and (c) increases coupling loss
Description : Do small core distortions formed by arc fusion's self alignment mechanism have more of an affect on light propagating through multimode or single mode fibers?
Last Answer : Single mode fibers.
Description : How does transit time affect the relationship of the grid voltage and the plate current at high frequencies?
Last Answer : Transit time causes the grid voltage and plate current to be out of phase
Description : What two properties of the launch condition may affect multimode fiber attenuation measurements?
Last Answer : . Launch spot size and angular distribution.
Description : How does an ammeter affect the circuit being measured?
Last Answer : Since the ammeter is a resistor in series with the load, it increases the resistance of the circuit and lowers circuit current.
Description : State three factors that affect the capacitance of a capacitor.
Last Answer : a. The area of the plates. b. The distance between the plates. c. The dielectric constant of the material between the plates.
Description : What characteristic is true of the ionosphere?
Last Answer : Feel Free to Answer
Description : What is the type of wave is reflected by particles in the ionosphere?
Description : Where is the worlds largest single dish telescope located that is used to study astronomy and ionosphere?
Last Answer : Arecibo