Description : In electronic circuits, DC voltages can be positive (+) or negative (-) when measured with respect to the _________. A. printed circuit board 'common' trace B. chassis, console frame or hull 'ground' C. analogue or digital circuitry 'common' bus D. all of the above
Last Answer : Answer: D
Description : Tightly knit metal braid wire can be used with a printed circuit board when ___________. A. conductor flexibility is required B. desoldering components in the circuit C. electrically produced magnetic ... cause inaccuracies in adjacent components D. reactance in the circuit must be kept to a minimum
Last Answer : Answer: B
Description : PCB stands for: a) Process Control Block b) Printed Circuit Board c) Both of The Above d) None of The Above
Last Answer : c) Both of The Above
Description : abbreviation EBCDIC stand for: a. Extended binary coded decimal interchange code b. External binary coded decimal interchange code c. Extra binary coded decimal interchange code d. None of these
Last Answer : a. Extended binary coded decimal interchange code
Description : Which numbering format is the basis for digital electronic circuitry? 76) A) decimal B) BCD C) octal D) binary
Last Answer : D) binary
Description : The network of wires or electronic path ways on mother board back side: a. PCB b. BUS c. BOTH A and B d. None of these
Last Answer : c. BOTH A and B
Description : What type of circuit is on card 'A0AA2' at coordinate '29Q' shown in the illustration? EL-0099 A. Operational amplifier B. Digital logic inverter C. Square wave pulse generator D. Binary counter
Last Answer : Answer: A
Description : The circuit shown in the illustration functions as a ____________. EL-0087 A. pulse trigger circuit for an operational amplifier B. three stage, high gain class 'A' amplifier C. binary ripple counter or shift register D. free running multivibrator
Last Answer : Answer: C
Description : Two contributors of electronic console failures are heat and vibration. To combat some of their effects, preventive maintenance procedures should include ______________. A. systematic rotation of circuit cards with those ... bolts and changing of the air in the control room D. all of the above
Description : To avoid damaging the components of a printed circuit board when testing it with a DC volt-ohmmeter, you should _______. A. ground the board B. avoid reversing the polarity of the leads C. isolate sensitive components with heat sinks D. all of the above
Description : When soldering a printed circuit board component, you should be careful to prevent damage by _________. A. quickly heating the joints, using a high wattage iron B. using the soldering iron tip sparingly C. using only acid cord solder D. applying mechanical pressure to the joints being soldered
Description : Why is it a poor practice to use a high wattage soldering iron when soldering or desoldering components on a printed circuit board? A. The circuit board will blister and warp. B. The foil wire bonded ... board has a low melting temperature. D. The solder is kept to a dull heat dissipating finish.
Description : One feature of the operational amplifier is that it can have ____________. A. up to ten outputs B. binary coded decimal inputs C. several hundred amps at the output D. inverting and non-inverting inputs
Description : How is the inverter circuit classified based on commutation circuitry?
Last Answer : a. Line commutated inverters. b. Load commutated inverters. c. Self commutated inverters. d. Forced commutated inverters.
Description : Electric circuits are protected against overloads and short circuits by means of a/an ______________. A. circuit breaker B. amplifier C. diode D. capacitor
Description : Electrical circuits are protected against overheating by means of a/an ______________. A. circuit breaker B. amplifier C. diode D. capacitor
Last Answer : The main printed circuit board of a computer is called mother board.
Description : A kiosk a) is data organised and presented in a manner that has additional value beyond t he value of the data itself b) combines microscopic electronic components on a single integrated circuit that ... and service d) describes a computer's type, processor, and operating system e) None of these
Last Answer : c) is a computer station that provides the public with specific and useful information and service
Description : A common type of protective covering used on electrical conductors is _____________. A. plain paper B. fibrous braid C. silver sheathing D. babbitt sheathing
Description : For more complete vessel protection when using an impressed current cathodic system _____________. A. all ship's service alternators have additional temperature sensing devices and a thermal recorder ... with the hull and the propeller shaft is grounded through a slip ring/brush arrangement
Description : Is sodium hypochlorite binary or poly atomic?
Last Answer : Sodium hypochlorite has the formula NaClO and so is polyatomic.It has 3 different atoms (Na, Cl and O).
Description : In the illustration, the component VR1 on the A1A1 PCB is _________. EL-0060 A. a zener diode to regulate the +9 volt power supply B. a variable resistor diode to control the output to terminal 9 that controls ... terminal 9 at 6.6 volts DC D. a tunnel diode with a breakdown voltage of 6.6 Volts DC
Description : Multilayer printed circuit board repair is the responsibility of what 2M repair technician?
Last Answer : Microminiature repair technician.
Description : When does most printed circuit board damage occur?
Last Answer : During disassembly or repair.
Description : Which of the following is correct full form of BCD? A) Binary Coded Decimal B) Bit Coded Decimal C) Binary Coded Digit D) Bit Coded Digit
Last Answer : Answer : A
Description : EBCDIC stands for A) Extended Binary Coded Decimal Interchange Code B) Extended Bit Code Decimal Interchange Code C) Extended Bit Case Decimal Interchange Code D) Extended Binary Case Decimal Interchange Code
Description : BCD is A) Binary Coded Decimal B) Bit Coded Decimal C) Binary Coded Digit D) Bit Coded Digit
Description : ASCII and EBCDIC are the popular character coding systems. What does EBCDIC stand for? A) Extended Binary Coded Decimal Interchange Code B) Extended Bit Code Decimal Interchange Code C) Extended Bit Case Decimal Interchange Code D) Extended Binary Case Decimal Interchange Code
Description : The language made up of binary coded instructions. a) Machine b) C c) BASIC d) High level
Last Answer : Answer: a Explanation: The language made up of binary coded instructions built into the hardware of a particular computer and used directly by the computer is machine language
Description : Which language was used to program Second Generation computers? (A) Binary Coded language (B) Assembly language (C) Machine language (D) None of the Above
Last Answer : (B) Assembly language
Description : Which of the following is not a baseband signal modulation? A. RF carrier B. Video System C. Audio signal D. Binary coded pulses
Last Answer : A. RF carrier
Description : In which code is object file is coded: a. Link code b. Decimal code c. Assembly code d._— Binary code
Last Answer : d._— Binary code
Description : BCD is a. Binary Coded Decimal b. Bit Coded Decimal c. Binary Coded Digit d. Bit Coded Digit
Last Answer : Binary Coded Decimal
Description : EBCDIC stands for a. Extended Binary Coded Decimal Interchange Code b. Extended Bit Code Decimal Interchange Code c. Extended Bit Case Decimal Interchange Code d. Extended Binary Case Decimal Interchange Code
Last Answer : Extended Binary Coded Decimal Interchange Code
Description : EBCDIC stands for a) Extended Binary Coded Decimal Interchange Code b) Extended Bit Code Decimal Interchange Code c) Extended Bit Case Decimal Interchange Code d) Extended Binary Case Decimal Interchange Code
Last Answer : a) Extended Binary Coded Decimal Interchange Code
Description : BCD stands for: a) Base Coded Decimal b) Bilateral Coded Decimal c) Binary Coded Decimal d) None of The Above
Last Answer : c) Binary Coded Decima
Description : BCD stands for: a. Binary coded decimal b. Based coded decimal c. Both A and B d. None of these
Last Answer : a. Binary coded decimal
Last Answer : a. Binary Coded Decimal
Last Answer : a. Extended Binary Coded Decimal Interchange Code
Description : BCD stands for: a. Binary coded decimal b. Binary coded decoded c. Both a & b d. none of these
Description : The only language which the computer understands is ______________ a) Assembly Language b) Binary Language c) BASIC d) C Language
Last Answer : Answer: b Explanation: The Computer understands only binary language which is written in the form of 0s & 1s. A computer can understand assembly language but an assembler is ... language to binary language. Similarly, for understanding high level languages, compilers/interpreters are required
Description : If the supply voltage is 220 volts 60 Hz, what is the operating voltage of the motor controller circuitry illustrated? EL-0011 A. 110 volts DC B. 110 volts AC C. 220 volts DC D. 220 volts AC
Description : The symbol at coordinates '15R' in the illustration indicate a connection to ___________. EL-0100 A. the analog circuitry common bus B. ground C. the vessel's hull D. the console's chassis
Description : The symbol at coordinates '11R' in the illustration indicate a connection to _____________. EL-0100 A. ground B. the console chassis C. the digital circuitry common bus D. earth through the vessel's hull
Description : As a general rule, the first troubleshooting action to be taken in checking faulty electric control devices is to _____________. A. draw a one line diagram of the circuitry B. test all fuses and measure the line voltage C. take megger readings D. insulate the apparatus from ground
Description : When paralleling two alternators using three synchronizing lamps, the flickering of all three lamps becomes progressively slower and slower. This means the ______________. A. frequency of the incoming ... the bus D. terminal voltage of the incoming alternator is approaching that of the bus
Description : An operational amplifier, as used in today's consoles, may have a calculated gain of 5. This means that as the input changes by ______________. A. 1 volt, the output changes 5 volts B. 5 volts, the output changes 1 volt C. 5 volts, the output changes 10 volts D. 10 volts, the output changes 5 volts
Description : The purpose of squirrel-cage windings in a synchronous motor is to ______________. A. provide more precise balancing B. produce a higher power factor C. eliminate arcing between the stator and the frame D. provide a means for starting