Description : Which of the following precautions should be taken when troubleshooting various power circuits using a common solenoid-type mechanical voltage tester (wiggins)? A. Never use this tester on circuits greater ... voltage expected in the circuit in order to prevent damage from an off-scale reading.
Last Answer : Answer: A
Description : The FET and the vacuum tube have what in common?
Last Answer : Voltage controls conduction.
Description : When designing vacuum-tube circuits, what characteristics of tubes must be taken into consideration?
Last Answer : Differences in performance of tubes of the same type
Description : Name the components which greatly increase the weight of vacuum-tube circuitry.
Last Answer : Transformers, capacitors, and resistors.
Description : What discovery proved to be the foundation for the development of the vacuum tube?
Last Answer : The Edison Effect.
Description : Name two functions of the base of a vacuum tube.
Last Answer : It serves as a mounting for the tube elements and as the terminal connectio
Description : Why do electrons cross the gap in a vacuum tube?
Last Answer : because the negatively charged electrons are attracted to the positively cha
Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + ... -reactions and calculate the cell potential from the standard potentials and predict if the reaction is reactant or product favoured. -Chemistry
Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V Af cathode (reduction) : MnO-4(aq) + 8H+ ( ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.
Description : What transmission method does NOT depend on relative frequency or target motion?
Last Answer : Pulse modulation.
Description : Magnetic induction occurs when there is relative motion between what two elements?
Last Answer : A conductor and a magnetic field.
Description : The electrons in the beam of a klystron are speeded up by a high dc potential applied to what elements?
Last Answer : The accelerator grid and the buncher grids.
Description : When the relative humidity is below 10%, what happens to magnetic tape and parts of a tape recorder that could cause environmental damage?
Last Answer : Dirt build-up caused by static electricity.
Description : The depth of the water table at a place is 45 m below the general ground level. To lift water from a deep tube well in such a locality, the type of pump to be installed is (A) Centrifugal pump (B) Reciprocating pump (C) Deep well turbine pump (D) None of these
Last Answer : (C) Deep well turbine pump
Description : The noble gases have low boiling points because: w) their ionization potentials are very low x) only weak Van der Waals forces hold the atoms together y) they are produced by the fractional distillation of liquid air z) they have eight electrons in the outer shell
Last Answer : ANSWER: X -- ONLY WEAK VAN DER WAALS FORCES HOLD THE ATOMS TOGETHER
Description : The foundation I work for is looking for new clients. Can you think of potentials? [Details inside].
Last Answer : Day care centers, pediatric centers, places like that?
Description : How many Potentials were there in the last season of Buffy?
Last Answer : Are you talking about the main ones?
Description : In the network shown in fig. , points A, B, and C are at potentials of 70 V, 0, and 10V, respectively.
Last Answer : In the network shown in fig. , points A, B, and C are at potentials of 70 V, 0, and 10V, respectively. ... AB, DB and DC are in the ratio of `3:2:1`
Description : A 48-year-old female patient develops an acute, severe and isolated right C6 radiculopathy affecting both the motor and sensory roots. She is examined in an EMG clinic 3 weeks after the onset of ... to be depressed or absent. E. Voluntary motor unit activity may be absent in the right biceps.
Last Answer : Ans: A
Description : Which of the following conditions indicates that a lead-acid battery is being charged too rapidly? A. Sparks occurring at the positive terminal. B. Unusually high electrolyte specific gravity. C. Low plate potentials being developed. D. Excessively high temperatures and gassing rates.
Last Answer : Answer: D
Description : In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is ... B) Chemical potentials (C) Activity co-efficients (D) Mass transfer co-efficients
Last Answer : (A) Concentrations
Description : Choose the correct statement. (a) Nociceptors respond to changes in pressure. (b) Meissner's corpuscles are thermoreceptors. (c) Photoreceptors in the human eye are depolarised during darkness and ... hyperpolarised in response to the light stimulus. (d) Receptors do not produce graded potentials.
Last Answer : (c) Photoreceptors in the human eye are depolarised during darkness and become hyperpolarised in response to the light stimulus.
Description : The potential due to a dipole at a point P from it is the a) Sum of potentials at the charges b) Difference of potentials at the charges c) Multiplication of potentials at the charges d) Ratio of potentials at the charges
Last Answer : b) Difference of potentials at the charges
Description : Subsidiaires located in countries which are less crucial for success while holding valuable resources and capabilities are...? A. Contributors B. Star Potentials C. Black Holes D. Implementers
Last Answer : Contributors
Description : The necessary condition for phase equilibrium in a multiphase system of N components is that the (A) Chemical potentials of a given component should be equal in all phases (B) Chemical potentials of all ... potentials of any given component in all the phases should be the same (D) None of these
Last Answer : (A) Chemical potentials of a given component should be equal in all phases
Description : What is being controlled at the potentials between anode of an oscilloscope?
Last Answer : Focus
Description : Cleo Davis sets forth one major condition when her firm's sales managers sit down to reallocate accounts into sales territories: "It is an absolute necessity that the sales potentials of the territories we establish be A)equal." B)measurable." C)consistent." D)the same as before."
Last Answer : B)measurable."
Description : If a manager tries to form territories with equal sales potential, the territories will usually be unequal in geographic size; this will cause the salespersons with larger territories to A)develop ... potential is the same. D)have much larger sales than those salespeople with smaller territories.
Last Answer : B)have to work longer and harder to generate a certain sales volume.
Description : Which one of the following statements is not correct? A Since voltage depends on concentrations, using standard conditions makes it easier to compare different electrochemical reactions. B We have ... half-reactions are determined by combining the relevant half-cell with a standardised half-cell.
Last Answer : C The direction of a redox reaction can only be determined experimentally.
Description : Superconducting materials are being used in the Superconducting Super Collider to: w) cool the particles. x) minimize electrical power consumption. y) maximize the acceleration potentials. z) provide radiation shielding.
Last Answer : ANSWER: X -- MINIMIZE ELECTRICAL POWER CONSUMPTION.
Description : From the ground state, electronic configuration of the elements given below, pick up the one with highest value of second ionization energy:
Last Answer : From the ground state, electronic configuration of the elements given below, pick up the one with highest value of second ... D. `1s^(2)2s^(2)2p^(5)`
Description : The main difference between an electron tube and a transistor is the _____________. A. type of function they can perform B. reaction of electron flow through a gas or vacuum in a transistor C. ... when placed in a tube D. reaction of electron flow through a semiconductor used to form a transistor
Description : _________is the partial pressure of water vapor at the existing temperature divided by the equilibrium vapor pressure of water at the existing temperature. a. vacuum pressure b. relative humidity c. absolute pressure d. vapor pressure
Last Answer : relative humidity
Description : What is considered as the actual pressure at a given position and is measured relative to absolute vacuum? A. Gage pressure B. Absolute pressure C. Atmospheric pressure D. Vacuum pressure
Last Answer : Absolute pressure
Description : The index of refraction of a plastic material is 1.5. The speed of light in this material relative to that in a vacuum is: w) 2 x) 1.5 y) 2/3 z) 1/2
Last Answer : ANSWER: Y -- 2/3
Description : Relative permeability of vacuum is?
Last Answer : Relative permeability of vacuum is 1.
Description : Why are drum-type armatures preferred over the Gramme ring armature in modern dc generators?
Last Answer : Drum-type armatures are more efficient, because flux lines are cut by both sides of each coil.
Description : How did vacuum tubes cause a problem for first generation computers
Last Answer : They were unreliable, required a lot of power to run, and produced so much heat that air conditioning was needed to protect computer parts.
Description : In electronic computers, vacuum tubes were replaced by transistors and transistors have been replaced by what device?
Last Answer : Integrated circuits.
Description : Vacuum tubes are designed to operate in what portion of the Ep - Ip
Last Answer : The linear portion.
Description : What type of uhf tube was developed to handle large amounts of power?
Last Answer : Planar
Description : What type of tube best meets the requirements of a modulator switching element?
Last Answer : Thyratron.
Description : The collector-injection modulator is similar to what type of tube modulator?
Last Answer : Plate modulator.
Description : What was the name of the first vacuum tube invented by Lee de Forrest in 1906 ?
Last Answer : The first vacuum tube invented by Lee de Forrest in 1906 was called Audion.
Description : Who invented the first vacuum tube ?
Last Answer : Edison was the first to invent a vacuum tube.
Description : What does a vacuum tube do ?
Last Answer : The vacuum tube acts as a rectifier
Description : The Third Generation Computer was made with . A) Vacuum Tube B) Discrete Components C) IC D) Bio Chips
Last Answer : Answer : C
Description : The purpose of vacuum tube was to NOT act like A) an amplifier B) a switch C) a router D) None of above
Description : The Second Generation Computer was based on . A) Vacuum Tube B) Silicon Chips C) Transistor D) Bio Chips
Description : When was vacuum tube invented? A) 1900 B) 1906 C) 1910 D) 1880
Last Answer : Answer : B