Description : Which of the following statements comparing transistors and vacuum tubes is correct? A. Both transistors and vacuum tubes have a cathode that must be heated to give off electrons. B. A vacuum tube must ... flow. D. The anode of both transistors and vacuum tubes must be heated to give off electrons.
Last Answer : Answer: B
Description : The main electronic component used in first generation computers was A) Transistors B) Vacuum Tubes and Valves C) Integrated Circuits D) None of above
Last Answer : Answer : B
Description : Chief component of first generation computer was A) Transistors B) Vacuum Tubes and Valves C) Integrated Circuits D) None of above
Description : Chief component of first generation computer was a. Transistors b. Vacuum Tubes and Valves c. Integrated Circuits d. None of above
Last Answer : Vacuum Tubes and Valves
Last Answer : b. Vacuum Tubes and Valves
Description : Pick up the consideration to the taken while designing a hospital from the following: (A) The operation theatre unit to be detached as it requires sterilized zone but near the ward for the patients ... post-mortem room (C) Casualty unit should be provided a separate entrance (D) All the above
Last Answer : Answer: Option D
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Description : In electronic computers, vacuum tubes were replaced by transistors and transistors have been replaced by what device?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 : Which of the following was used as circuitry for first generation of computers? (1) Vacuum tube (2) Transistors (3) Integrated circuits (4) Microprocessors
Last Answer : Vacuum tube
Description : The actions of the tr and atr circuits depend on the impedance characteristics of what length of transmission line?
Last Answer : Quarter-wavelength section
Description : 2 ml each of concentrated HCl, HNO3 and a mixture of concentrated hydrochloric acid and Concentrated nitric acid in the ratio of 3:1were taken in test tubes labelled as A, B and C, A small piece of metal was put in ... the metal dissolved in test tube C. The metal could be: A) Al B) Au C) Pt D) Cu
Last Answer : B) Au
Description : A tube can fill a cistern in 18hrs.After half the cistern is filled, three more similar tubes are opened. What is the total time taken to fill the cistern completely ? A) 9hrs 52min B) 10hrs 15 min C) 9hrs 45 min D) 10hrs 30min
Last Answer : Time taken to fill half of the cistern = 18/2 = 9 hrs After half the cistern is filled , three more similar tubes are opened. We know that one tube can in 18 hrs can fill = V litres(i.e. fully fill a cistern) ... V/2 will be 2 hrs 15 min Total time = 9 hrs + 2 hrs + 15 min = 11 hrs 15 min
Description : The most significant nursing problem related to continuous tube feedings is a) potential for aspiration Because the normal swallowing mechanism is bypassed, consideration of the danger of ... in fat metabolism and lipoprotein synthesis Tube feedings maintain fat metabolism and lipoprotein synthesis.
Last Answer : a) potential for aspiration Because the normal swallowing mechanism is bypassed, consideration of the danger of aspiration must be foremost in the mind of the nurse caring for the patient receiving continuous tube feedings.
Description : The FET and the vacuum tube have what in common?
Last Answer : Voltage controls conduction.
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 : On the diagram below, name the elements of the vacuum tube and their potentials relative to dc ground. time is an example of what type of transmission?
Last Answer : a. Plate, positive. b. Suppressor grid, negative.
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 : The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system (A) Is as light as possible (B) Has very high C.O.P. (C) Employs minimum quantity of refrigerant (D) Consumer minimum horse power
Last Answer : (A) Is as light as possible
Description : When providing care to the patient with bilateral nephrostomy tubes, the nurse never does which of the following? a) Clamps each nephrostomy tube when the patient is moved The nurse must never clamp a ... saline q8h as ordered The nurse may irrigate a nephrostomy tube with specific orders to do so.
Last Answer : a) Clamps each nephrostomy tube when the patient is moved The nurse must never clamp a nephrostomy tube because it could cause obstruction and resultant pyelonephritis.
Description : Medium -length nasoenteric tubes are used for: a) Feeding Placement of the tube must be verified prior to any feeding. b) Decompression A gastric sump and nasoenteric tube are used for ... aspiration. d) Emptying Gastric sump tubes are used to decompress the stomach and keep it empty.
Last Answer : a) Feeding Placement of the tube must be verified prior to any feeding.
Description : Amalgamation is said to be in the nature of merger if: A. All assets and liabilities of transferor company are taken over by the transferee company. B. Business of transferor company is intended to ... paid in equity shares by the transferee company except for fraction shares. D. All of the above
Last Answer : D. All of the above
Description : One of the following is a possible cause for a slow drift of frequency in a self-exited transmitter oscillator circuits resulting to a poor frequency stability. A. Loose shielding B. ... capacitor in the oscillator C. Poor soldered connections D. Faulty capacitor, resistor, tubes or resistors
Last Answer : B. Heating of capacitor in the oscillator
Description : If you are required to monitor the speed of a device with a stroboscope over an extended period of time, what step should be taken to prolong the life of the flasher tube?
Last Answer : Monitor a submultiple frequency to prolong the flasher-tube life.
Description : What is the advantage of designing a limited bandwidth into a servo amplifier?
Last Answer : Unwanted noise-generated frequencies are rejected
Description : Does anybody make vacuum tubes anymore? All I ever find are surplus.
Last Answer : answer:Without details as to type, there are over 39,000 currently listed on eBay. I’d say they’re still manufactured since there’s also availability on Amazon.
Description : Why vacuum tubes are not preferred at microwave?
Last Answer : Actually three special purpose vacuum tubes were specifically designed for microwave usage and are in some cases still the least expensive way to work with high power microwave signals.These ... and the electromagnetic compatibility (EMC) testing industry for immunity testing of electronic devices)
Description : Which of the following is not a feature of first generation computers A) They used vacuum tubes or valves as main electronic component B) They consumed lots of electricity and produced excessive heat C) They used machine language and assembly language to program the machine D) None of above
Last Answer : Answer : C
Description : First generation computers used for memory A) vacuum tubes B) silicon chips C) magnetic drum D) RAM
Description : Which electronic component was made out of semiconductor material? A) Vacuum tubes B) Transistors C) ICs D) All of above
Description : Who invented vacuum tubes? A) John Bardeen B) William Shockley C) Lee de Forest D) All of above
Description : What was the main disadvantage of vacuum tubes? A) They were larger in size B) They consumed a lot of electricity C) They produced heat and often burned out D) The operation cost was high
Description : Why are vacuum tubes also called valves? A) Because they can amplify the weak signals and make them strong B) Because they can stop or allow the flow of current C) Both of above D) None of above
Description : First Generation computers used ______ for Circuitry and ________ for memory (A) Transistor and Magnetic Core (B) IC and Magnetic Memory (C) Vacuum tubes and Magnetic drum (D) IC and Magnetic Core
Last Answer : (C) Vacuum tubes and Magnetic drum
Description : Heat sinks are frequently used with _____________. A. power transistors B. vacuum tubes C. tunnel rectifier diodes D. all of the above
Last Answer : Answer: A
Description : The method used to produce electron emission in most vacuum tubes is known as ____________. A. photoelectric emission B. secondary electric emission C. cold cathodic electric emission D. thermionic emission
Last Answer : Answer: D
Description : The HPAs in most satellite are A. TWTs B. Klystrons C. Vacuum tubes D. Magnetrons
Last Answer : A. TWTs
Description : Vacuum tubes have been replaced by-----? A. Conductors B. Diodes C. Transistors (Answer) D. None of these
Last Answer : C. Transistors (Answer)
Description : Pick out the wrong statement. (A) The value of hydrostatic head increases with increase in vacuum in the effect in a multiple effect evaporator system (B) Entering velocity of the liquid in ... a multiple effect evaporation system, the number of effects is limited by the total boiling point rise
Last Answer : (C) Duhring's plot is used for calculating the concentration of solution
Description : This invention replaced vacuum tubes and made computers much smaller and faster. However, it was eventually replaced by another invention (i) RAM (ii) ENIAC (iii) Transformer (iv) Transistor.
Last Answer : (iv) Transistor.
Description : First generation computer systems used 1) Transistors 2) Vacuum tubes 3) Magnetic cores 4) Silicon chips
Last Answer : 2) Vacuum tubes
Description : Which electronic component was use in first generation? 1) Vacuum tubes 2) transistors 3) IC chips 4) all above
Last Answer : 1) Vacuum tubes
Description : Which electronic component was use in first generation? 1 Vacuum tubes 2 transistors 3 IC chips 4 all above
Last Answer : 1 Vacuum tubes
Description : Fifth generation computers do not have : (1) Speech recognition (2) Artificial intelligence (3) Very large scale integration (4) Vacuum tubes
Last Answer : Vacuum tubes
Description : is Ohms law applicable to vacuum tubes?
Last Answer : Ohm's law is not applicable to vacuum tubes.
Description : What will an alien intelligence make of us once you tube content arrives for their consideration?
Last Answer : I hope so. I especially hope they look at all the stupid stunts that people have done and posted on YouTube and get the idea that Earthlings are real idots. The, they’ll be easier for us to beat when the try to take over.
Description : Cold-cathode tubes can be used as voltage regulators because of what characteristic?
Last Answer : They have the ability to maintain a constant voltage drop across the tube despite changes in current flow.