Description : Make up water is supplied during cooling tower operation to compensate for water losses due to (A) Evaporation (B) Blowdown (C) Entrainment (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : A __________ is a type of heat exchange system where water is heated to its' boiling point via combustion of a fuel blown through a tube submerged in water. a. Condensate loop b. Hyperbolic cooling tower c. Steam boiler d. All of above
Last Answer : c. Steam boiler
Description : What position data are supplied by 2D search radar?
Last Answer : Range and bearing.
Description : Power for the electronic digital multimeter is normally supplied by what internal power source?
Last Answer : Rechargeable batteries.
Description : The term territorial water means – (1) The water found within the country in form of rivers and lakes (2) The water secured from other countries (3) The water which is supplied to other countries (4) Water of the sea located close to the coast of a country
Last Answer : (4) Water of the sea located close to the coast of a country Explanation: Territorial waters, or a territorial sea, as defined by the 1982 United Nations Convention on the Law of the Sea ... of the state, although foreign ships (both military and civilian) are allowed innocent passage through it.
Description : The term territorial water means (1) The water found within the country in form of rivers and lakes (2) The water secured from other countries (3) The water which is supplied to other countries (4) Water of the sea located close to the coast of a country
Last Answer : Water of the sea located close to the coast of a country
Description : In an open-loop control system, what action reduces the input to zero so the load is stopped at the desired position?
Last Answer : Usually the operator senses the desired load movement and reduces the input to stop the motor.
Description : What basic requirement of a closed-loop system (not present in open-loops) enables present load position to be sensed?
Last Answer : Feedback.
Description : _______ cooling towers use a process similar to the one found in small evaporative cooling units. a. Hyperboloid b. Tower c. Condensate loop d. None
Last Answer : a. Hyperboloid
Description : Which cooling Towers use a process similar to the one found in small evaporation active cooling units a) hyperbolic b) Tower c) condensate loop d) none of these
Last Answer : a) hyperbolic
Description : What type of heat exchangers are most commonly used for a large-scale plant-cooling loop using seawater as the utility?
Last Answer : Commonly known as a secondary cooling loop or SECOOL, a closed loop water system is circulated through a processing plant near a sea. Process heat is transferred into the closed loop water and ... debris to clear the strainer. This method has been used for many years with great success.
Description : select the correct response from the choices given in the parentheses. Q-20. In a closed-loop configuration the output signal is determined by (the input signal, the feedback signal, both).
Last Answer : Both the input signal and the feedback signal.
Description : What does the term "closed-loop" mean in the closed-loop configuration of an operational amplifier?
Last Answer : The use of degenerative (negative) feed-back
Description : What is the advantage of using a closed-servo loop to control load velocity?
Last Answer : The closed-servo loop can regulate load speed under changing conditions.
Description : In a typical velocity servo block diagram what device is placed in the feedback loop that is not present in the position servo?
Last Answer : Tachometer.
Description : What are the three most common closed-loop capstan drive designs?
Last Answer : a. Differential velocity capstans. b. Dual motors dual capstans. c. Peripheral drive capstans.
Description : How do closed-loop capstan drive tape transports overcome the disadvantages of the open-loop drive design?
Last Answer : Closed loop capstan drive transports use more than one capstan to clamp the tape in the area around the magnetic head.
Description : There are two types of tape transport configurations, open loop capstan drive and closed-loop capstan drive. What are two major disadvantages of open-loop capstan drive tape transports?
Last Answer : a. Only operates in one direction. b. The tape tension and head-to-tape contact can vary.
Description : A typical liquid-cooling system is composed of what loops?
Last Answer : Primary and secondary.
Description : What type of cooling is used to control ambient room temperature?
Last Answer : Air conditioning.
Description : Which one of the following fill material is more energy efficient for cooling towers in case of sea water cooling? • Splash fill • Film fill • Low clog film fill • None of the above
Last Answer : Film fill
Description : Why are time-domain reflectometers often compared to a radar system?
Last Answer : Both transmit a pulse and analyze the signal reflection.
Description : The hyperboloid cooling towers are often associated __ a. with nuclear power plants b. Used in some coal-fired plants c. In some large chemical and other industrial plants. d. All of the above.
Last Answer : All of the above
Description : When the reduced level of the water source is higher than the reduced level of the consumer's place, water is generally supplied (A) By pumping system (B) By gravitational system (C) Both (a) and (b) (D) All the above
Last Answer : (B) By gravitational system
Description : The energy dissipated by a resistive load is most often in what form?
Last Answer : Heat.
Description : Transmitter power readings are most often referenced to what power level?
Last Answer : 1 milliwatt.
Description : What type of receiver is most often used in radar systems?
Last Answer : Superheterodyne.
Description : What three types of storage elements most often are used in modulators?
Last Answer : Capacitor, artificial transmission line, or pulse-forming network.
Description : Which of the two general classes of antennas is most often used with radar?
Last Answer : Directional.
Description : What type of ranging circuit is most often used with a radar that requires extremely accurate range data?
Last Answer : Range gate or range step.
Description : Which of the two types of deflection coils (fixed or rotating) is used most often?
Last Answer : Fixed.
Description : Fire-control tracking radar most often radiates what type of beam?
Last Answer : A narrow circular beam.
Description : What type of transmission line is often used to connect a television set to its antenna?
Last Answer : Twin lead.
Description : Why is the negative-resistance magnetron often operated with reduced filament voltage?
Last Answer : To reduce the effects of filament bombardment.
Description : What type of reflector is most often used in directive antennas?
Last Answer : Parabolic.
Description : When cleaning the parts of a tape transport, why should you switch lint-free cloths and swabs often?
Last Answer : You may transfer dirt or oxide particles from one part of the tape transport to another
Description : How often should you demagnetize a recorder's magnetic heads?
Last Answer : Every 8 to 25 hours depending on the manufacturer's recommendations.
Description : Approximately how often should you clean a floppy disk drive that gets heavy use?
Last Answer : Once a month
Description : What are picture elements often called?
Last Answer : Pixels or pels.
Description : In what type of memory are often used instructions and programs permanently stored inside the computer?
Last Answer : Read-only memory (ROM
Description : What terms are often used to describe basic half-wave antennas?
Last Answer : Dipole, doublet and Hertz.
Description : Why is the ac induction motor used more often than other types?
Last Answer : They are simple and inexpensive to make.
Description : The work done by a system is `8J`, when `40J` heat is supplied to it. Calculate the increases in internal energy of system.
Last Answer : The work done by a system is `8J`, when `40J` heat is supplied to it. Calculate the increases in internal energy of ... J B. 40 J C. 48 J D. `-32 J`
Description : Power is rate of doing work or the rate at which energy is supplied to the system. A constant force F is applied to a body of mass m.
Last Answer : Power is rate of doing work or the rate at which energy is supplied to the system. A constant force F ... expression for power in terms of F, m and t.
Description : Coast Guard Regulations (46 CFR) state that a continuous trickle charge, supplied from the ship's service power system, is required for batteries supplying power to the ___________. A. emergency diesel ... system for the radar C. portable radios for the lifeboats D. radios installed in the lifeboats
Last Answer : Answer: A
Description : Indicate the false statement. Noise figure is defined as A. the ratio of the S/N power supplied at the input terminal of a receiver or amplifier to the S/N power supplied to the output or ... under test, both working at the same temperature over the same bandwidth and fed from the same source
Last Answer : C. an unwanted form of energy tending to interfere with the proper and easy reception and reproduction of wanted signals
Description : By which nervous system and of what type, the blood is supplied into visceral organs? (a) Both SNS and PNS, involuntary (b) Para-sympathetic nervous system involuntary (c) Sympathetic nervous system, involuntary (d) Sympathetic nervous system, voluntary
Last Answer : (a) Both SNS and PNS, involuntary
Description : Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the (A) Physical nature, ash content and fineness of the coal (B) Amount of excess air supplied and load on the boiler (C) Type of burner and combustion chamber (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Change in enthalpy of a system is the heat supplied at (a) constant pressure (b) constant temperature (c) constant volume (d) constant entropy (e) N.T.P. condition.
Last Answer : Answer : a