Description : A MOSFET can be damaged by an electrostatic discharge at approximately what minimum potential?
Last Answer : 35 volts.
Description : Which of the following does not discharge the dust collected as a dry solid? (A) Electrostatic precipitator (B) Wet scrubber (C) Bag filter (D) Gravity settling chamber
Last Answer : (B) Wet scrubber
Description : Corona discharge is related to the operation of a/an (A) Induction motor (B) Electrostatic precipitator (C) Fast breeder reactor (D) Magneto hydrodynamic generator (MHD)
Last Answer : Option B
Description : Can I ground myself outside by wearing electrostatic discharge (ESD) footwear?
Last Answer : ESD shoes are A. ESD shoes are primarily designed for dischargin primarily designed for discharging static electrici g static electricity but to a degree they ty but to a degree they ground ... sit on any synthetic material. The ESD industry uses dissipative grounding to prevent a rapid discharge
Description : At high discharge rates, nickel-cadmium storage batteries are superior to lead-acid batteries because they __________. A. require fewer cells for the same voltage and less mounting space B. are able to ... times without much damage D. have no individual cells to replace at the end of useful life
Last Answer : Answer: C
Description : Why are the electrostatic fields between the electron gun elements called lenses?
Last Answer : Because they bend electron streams in much the same manner that optical lenses bend light rays.
Description : What will be the effect upon an electron traveling in the opposite direction to the lines of force in an electrostatic field?
Last Answer : The electron will be accelerated.
Description : In what way do magnetic lines of force differ from electrostatic lines of force?
Last Answer : Electrostatic lines of force do not form closed loops
Description : In what direction are electrostatic lines of force drawn?
Last Answer : Leaving positive, entering negative
Last Answer : The space between and around charged bodies.
Description : An electron moves into the electrostatic field between a positive charge and a negative charge. Toward which charge will the electron move?
Last Answer : Toward the positive charge.
Description : State four characteristics of electrostatic lines of force
Last Answer : a charged particle in straight lines and do not form closed loops. c. They have the ability to pass through any known material. d. They have the ability to distort the orbits of electrons circling the nucleus.
Description : State four characteristics of electrostatic lines of forceNEETS
Last Answer : a. They are polarized from positive to negative. b. They radiate from a charged particle in straight lines and do not form closed loops. c. They have the ability to pass through any known material. d. They have the ability to distort the orbits of electrons circling the nucleus.
Description : Which of the following is a scalar quantity? (1) Velocity (2) Force (3) Angular momentum (4) Electrostatic potential
Last Answer : (3) Angular momentum Explanation: The electrostatic potential at any point in an electric field is defined as the work done in bringing a unit positive charge from infinity to that point against the electric force of the field.
Description : If the electric potential is given, which of the following cannot be calculated? a) Electrostatic energy b) Electric field intensity c) Electric flux density d) Permittivity
Last Answer : a) Electrostatic energy
Description : Ionisation potential applied across the electrodes of electrostatic tar precipitator is around (A) 230 V AC (B) 60 KV AC (C) 230 V DC (D) 60 KV DC
Last Answer : (D) 60 KV DC
Description : Ionisation potential employed in the industrial electrostatic precipitator is of the order of (A) 30 to 70 kV DC (B) 30 to 70 kV AC (C) 230 V AC (D) 230 V DC
Last Answer : (A) 30 to 70 kV DC
Description : Which of the following is a scalar quantity ? (1) Velocity (2) Force (3) Angular momentum (4) Electrostatic potential
Last Answer : Electrostatic potential
Description : What would be the output of a negative clamper with a bias potential of −5 volts and an input voltage swing from +50 to −50 volts?
Last Answer : -5 volts.
Description : The electrostatic stress in underground cables is (a) same at the conductor and the sheath (b) minimum at the conductor and maximum at the sheath (c) maximum at the conductor and minimum at the sheath (d) zero at the conductor as well as on the sheath (e) none of the above
Last Answer : (c) maximum at the conductor and minimum at the sheath
Description : What minimum/maximum voltage level can be attained in the pulse generator section by adjusting the LEVEL control?
Last Answer : 0 to 5 volts.
Description : What is the term used to identify the points of minimum current and minimum voltage on an antenna?
Last Answer : Current and voltage nodes.
Description : Electrostatic forces in high voltage circuits cause indicating instruments to give ____________. A. parallax readings B. highly intuitive readings C. highly accurate readings D. inaccurate readings
Last Answer : Answer: D
Description : An electrostatic voltmeter in which an assembly of figure-8-shaped metal plates rotates between the plates of a stationary assembly when a voltage is applied betweeen the assemblies.
Last Answer : Kelvin voltmeter
Description : Voltage applied across a ceramic dielectric produces an electrostatic field 100 times greater than in air. The dielectric constant? of the ceramic equals________.
Last Answer : Voltage applied across a ceramic dielectric produces an electrostatic field 100 times greater than in air. The dielectric constant? of the ceramic equals 100.
Description : In a sawtooth generator, why is the transistor turned on for a longer time than the discharge time of the RC network?
Last Answer : To allow the capacitor time to discharge.
Description : What is the relative length of the discharge time constant with respect to the charge time constant of a damper (long or short)?
Last Answer : Long time constant.
Description : What determines the rate of discharge of the capacitor in a filter circuit?
Last Answer : Value of capacitance and load resistance.
Description : . What determines the rate of discharge of the capacitor in a filter circuit?
Last Answer : Value of capacitance and load resistance
Description : What is a short discharge of electric current that prepares the fiber ends for fusion called?
Last Answer : Prefusion
Description : What is the discharge rate for the capacitor in a pcm converter?
Last Answer : It will discharge to one-half its value between pulses.
Description : Leads are formed approximately how many degrees from their major axis?
Last Answer : 90 degrees
Description : Approximately how often should you clean a floppy disk drive that gets heavy use?
Last Answer : Once a month
Description : A field is approximately how many horizontal lines?
Last Answer : 525
Description : Reciprocating pumps are not able to compete with the centrifugal pump for industrial use, mainly because these pumps have (A) Very low speeds (B) Smaller discharge (C) Higher capital &maintenance cost (D) High vibrations
Last Answer : (C) Higher capital &maintenance cost
Description : Statement - 1 : `PbSiF_(6) + H_(2) SiF_(6)` + gelatine is taken as electrolyte in electrolytic refining of lead . Statement -2 : Discharge potential o
Last Answer : Statement - 1 : `PbSiF_(6) + H_(2) SiF_(6)` + gelatine is taken as electrolyte in electrolytic ... Statement-1 : is false , statement-2 : is true
Description : When you are making a high potential test on a piece of repaired electrical machinery, a rise in leakage current indicates ____________. A. good insulation B. bad insulation C. high insulation power factor D. a high slot discharge factor
Last Answer : Answer: B
Description : For a homogeneous earth dam 50 m high having 2 m free broad, a flow net was constructed and the results were : Number of potential drops = 2.4 Number of flow channels = 0.4. If co-efficiency of permeability of the dam material is ... 24 10-3 m3 /sec (C) 6 10-5 m3 /sec (D) 24 10-5 m3 /sec
Last Answer : (D) 24 × 10-5 m3 /sec
Description : If Nf , Nd and H are total number flow channels, total number of potential drops and total hydraulic head differences respectively, the discharge q through the complete flow is given by (where K is a constant) (A) q = (Nf/Nd) (B) q = KH (Nd/(Nf ) (C) q = KH (Nf/Nd) (D) q = KH Nf/Nd)
Last Answer : Answer: Option C
Description : At rest, the interior of the typical mammalian neuronal axon potential is approximately ________ mV (a) 0 (b) –70 (c) –100 (d) –20
Last Answer : Ans: B
Description : A megger is being used to test the insulation of an AC generator. The resistance value of a dry, clean winding will _____________. A. continue to rise as test potential is maintained, ... , becoming fairly steady after 5-7 minutes D. stabilize after approximately 2-4 minutes of fluctuation
Last Answer : Answer: A
Description : You are testing the insulation in an AC generator with a megohmeter. The resistance value of a dry, clean winding will ____________. A. continue to rise as the test potential is maintained, ... fairly steady after 5 to 7 minutes D. stabilize after approximately 2 to 4 minutes of fluctuation
Description : For minimum work input in a two stage compression process the intermediated pressure is the A. Arithmetic process of suction and discharge pressure B. Logarithmic mean of suction and discharge pressure C. Geometric mean of suction and discharge pressure D. Hyperbolic mean of suction and discharge
Last Answer : ANSWER : C
Description : Pick up the correct statement from the following: A. The sewer pipes of sizes less than 0.4 m diameter are designed as running full at maximum discharge B. The sewer pipes of sizes greater than 0.4 m ... discharge C. The minimum design velocity of sewer pipes is taken as 0.8 m/sec D. All the above
Last Answer : ANS: D
Description : Reduction ratio of crushers is the (A) Ratio of feed opening to discharge opening (B) Ratio of discharge opening to feed opening (C) Determining factor for minimum dia of the feed and the product (D) None of these
Last Answer : (A) Ratio of feed opening to discharge opening
Description : The expected discharge to be obtained from an open well sunk in coarse sand is 0.0059 cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, is (A) 2 m (B) 2.25 m (C) 2.50 m (D) 3.00 m
Last Answer : (D) 3.00 m
Description : channel is said to be of most economical cross-section, if (A) It gives maximum discharge for a given cross-sectional area and bed slope (B) It has minimum wetted perimeter (C) It involves lesser excavation for the designed amount of discharge (D) All of the above
Last Answer : Answer: Option D
Description : The discharge in an open channel corresponding to critical depth is (A) Zero (B) Minimum (C) Maximum (D) None of these
Description : Consider the following statements in respect of critical flow in a wide rectangular channel: 1. The specific energy is minimum for a given discharge. 2. The discharge is maximum for a given specific energy 3. The specific force is minimum for a ... b) 1, 2, 3 & 4 (c) 1, 2 & 4 only (d) 2, 3 & 4 only
Last Answer : (b) 1, 2, 3 & 4