Description : Figure 'D' shown in the illustration represents a/an ____________. EL-0078 A. DIP IC chip B. integrated diac/triac envelope C. TO-5 flat pack D. 7-segment BCD display
Last Answer : Answer: A
Description : . In a common anode, seven-segment LED display, an individual LED will light if a negative voltage is applied to what element?
Last Answer : The cathode.
Description : A device which converts BCD to Seven Segment is called (A) Encoder (B) Decoder (C) Multiplexer (D) Demultiplexer
Last Answer : Ans: B A device which converts BCD to Seven Segment is called DECODER. (A decoder coverts binary words into alphanumeric characters.)
Description : Which is the most suitable power device for high frequency ( more 100 kHz) switching application? a) Power MOSFET b) BJT c) SCR d) UJT
Last Answer : Ans: Power MOSFET
Description : State 2 advantages of JFET over BJT.
Last Answer : Advantages of JFET over BJT: 1) High input impedance 2) Better thermal stability 3) Produce less noise 4) Smaller than BJT 5) Rugged in construction and simpler to fabricate 6) High degree of isolation between Input and Output.
Description : The 8279 normally provides a maximum of _____ seven segment display interface with CPU. a) 8 b) 16 c) 32 d) 18
Last Answer : a) 8
Description : The commonly used standard data code to represent alphabetical, numerical and punctuation characters used in electronic data processing system is called A) ASCII B) EBCDIC C) BCD D) All of above
Last Answer : Answer : D
Description : The most commonly used standard data code to represent alphabetical, numerical and punctuation characters used in electronic data processing system is called A) ASCII B) EBCDIC C) BCD D) All of above
Last Answer : Answer : A
Description : The most commonly used standard data code to represent alphabetical, numerical and punctuation characters used in electronic data processing system is called a. ASCII b. EBCDIC c. BCD d. All of above
Last Answer : a. ASCII
Description : Which of the following is non-emissive display? A. LED B. LCD C. Both (A) and (B) D. None of the Above
Last Answer : B. LCD
Description : Where can I buy a display case for video game consoles?
Last Answer : I’d say some sort of spice cabinet or china cabinet with glass doors.
Description : State applications each of photo-diode and 7-segment display.
Last Answer : Applications of photo-diode:- 1) In cameras 2) In fiber optic receiver 3) in object counting system Applications of 7-segmet display 1) In calculators 2) In Wrist watches
Description : Give any two applications of LED and LCD each.
Last Answer : Two applications of LED (1) As an indicators and small display. (2) In digital thermometer, pulse rate meter. (3) In patient monitoring. Two applications of LCD (1) In video games (2) In calculators (3) In test equipments (4) In gauges and counters
Description : A IGFET is a A) Linear device B) Square law device C) Half power device D) 3/2 power law device.
Last Answer : B) Square law device
Description : Statistical table is the systematic arrangement of numerical data presented in rows and columns. What are the rules to be followed while constructing such a table?
Last Answer : Statistical table is the systematic arrangement of numerical data presented in rows and columns. ... be followed while constructing such a table?
Description : An open in the armature of a DC motor is suspected, but is not found by visual inspection of the commutator. The next step in troubleshooting this problem is to ________________. A. conduct a ... windings C. conduct an insulation resistance test of the armature D. test the commutator for a ground
Description : An operational amplifier, as used in today's consoles, has a calculated gain of 5. This means that when the input changes _____________. A. 5 volts, the output changes 10 volts B. 10 volts, the output changes 5 volts C. 2 volts, the output changes 10 volts D. 10 volts, the output changes 2 volts
Last Answer : Answer: C
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 : 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 : Capacitors are used on the output of the power supply in today's consoles to _____________. A. filter out 'ripple' B. prevent overloads C. act as a permanent load D. decrease the average value of the output voltage
Description : Under ______ debentures, if the issuer fails on payment of either the principal or interest amount, his assets can be sold to repay the liability to the investors A. Secured Debentures B. ... ) C. Fully convertible Debentures (FCD) D. Optionally Convertible Debentures (OCD) E. Unsecured Debentures
Last Answer : A. Secured Debentures Explanation: These instruments are secured by a charge on the fixed assets of the issuer company. So if the issuer fails on payment of either the principal or interest amount, his assets can be sold to repay the liability to the investors.
Description : In which of the following instruments the investor has the option to either convert these debentures into shares at price decided by the issuer/agreed upon at the time of issue. A. Non Convertible ... Fully convertible Debentures (FCD) D. Optionally Convertible Debentures (OCD) E. None of the Above
Last Answer : D. Optionally Convertible Debentures (OCD) Explanation: The investor has the option to either convert these debentures into shares at price decided by the issuer/agreed upon at the time of issue.
Description : What are the applications where BCD is used?
Last Answer : BCD is often used when you need to avoid the small roundingerrors that occur when converting from decimal to binary, and backagain. This is especially important when working with amounts ofmoney.
Description : State the applications of BJT.
Last Answer : Applications of BJT: 1. As a switch 2. As an amplifier 3. As a multivibrator 4. As a oscillator 5. As a timer circuit 6. As a Logic circuits 7. Delay circuits
Description : Compare between BJT and FET on the basis of (i) Biolar/Unipolar (ii) Tharmal Runaway (iii) Noise (iv) Applications
Last Answer : Parameter BJT FET Bipolar/Unipolar It is bipolar device i.e. current in this device is carried by electrons and holes. It is unipolar device i.e. current ... in oscilloscopes, electronic voltmeters and other measuring and testing equipment because of their high input impedance.
Description : The potentiometers shown in the illustration are supplied with both (+) and (-) voltages as well as a reference to ground ________________. EL-0095 A. so there is always a spare power ... , the other for relay operation and the potentiometers are in positions where they can be accidentally touched
Description : Subject orientation A . The science of collecting, organizing, and applying numerical facts B. Measure of the probability that a certain hypothesis is incorrect given certain observations. C. ... specially built around all the existing applications of the operational data D . None of these
Last Answer : C. One of the defining aspects of a data warehouse, which is specially built around all the existing applications of the operational data
Description : Where automatic restart does not present a hazard after a power failure, Coast Guard Regulations (46 CFR) require motor controllers for auxiliaries vital to the propelling equipment to be provided ... overload protection B. low voltage protection C. low voltage release D. reverse current protection
Description : When disassembling electric motors for maintenance or overhaul, ________________. A. punch mark frame and end bells for proper assembly B. wrap bearings in lint free cloths if they are to be reused C. tag and store small parts in a box D. all of the above
Last Answer : Answer: D
Description : Seating the brushes on a D.C. motor is first accomplished using ________________. A. a file for cutting the approximate curvature followed by sandpaper for the final fit B. sandpaper with the motor not ... for the finishing cut D. course lapping compound, followed by a medium and then a fine grade
Last Answer : Answer: B
Description : The dielectric strength of a vacuum or dry air is approximately ________________. A. 450 volts/inch B. 1000 volts/inch C. 20-kv/inch D. 50-kv/inch
Description : A 'dielectric' is a/an ________________. A. electrical insulator B. current flow C. good conductor D. semiconductor material
Description : If a fuse of correct size and type blows frequently, ________________. A. try the next higher amperage rating B. try the next lower amperage rating C. look for trouble within the circuit D. reduce the applied voltage 10%
Description : As shown in the illustrations, most console schematic diagram sheets have letters and/or numbers placed across the top and numbers along the side boarders. The purpose of these markings is to ... small hole over a letter and number, what month and year that particular page was redrawn
Description : Compressed air should not be used to clean motor controller equipment because ________________. A. it may force metallic particles into coil insulation B. the surrounding area may need additional cleaning C. the air blast dries out insulation quickly D. a mask and respirator would be required
Description : Motor controllers are seldom troubled by grounds because ________________. A. cabinet heaters always keep internal components dry B. special insulation is used on wire for vital circuits C. ... on controller panels greatly reduce vibration D. contactors and relays are mounted on nonconducting panels
Description : The amount of mechanical force or torque produced by an electric motor depends on the ________________. A. strength of its magnetic field B. amount of armature current flow C. length of conductor in the field D. all of the above
Description : As shown in the illustrations, ordered rudder angle is fed back from the ________________. EL-0097 A. power unit to the magnetic amplifier B. steering gear to the control potentiometer C. magnetic amplifier to the steering gear D. rudder yoke to the non-followup controller
Description : You can determine if a circuit breaker has tripped by ________________. A. examining the position of the handle B. checking for which of the breakers is warm C. looking for a burned-out link D. all of the above
Description : When checking the specific gravity of the battery electrolyte with a hydrometer, you should be aware that ________________. A. the battery is fully charged when the float sinks deepest into the ... is added to the cell D. warm temperatures will lower the specific gravity of the electrolyte
Description : A silicon controlled rectifier (SCR) is a solid state device used to change ________________. A. DC to AC and control relatively low load current B. AC to DC and control relatively high load ... to AC and control relatively high load current D. AC to DC and control relatively low load current
Description : The diagram shown in the illustration demonstrates one of the useful properties of an 'RC' time constant circuit. The useful characteristic of the circuit is that 'C' can be charged ________________. EL-0086 A. ... with a high 'R' value and discharged slowly at a low current with a low 'R' value
Description : A triac thyristor functions as a control device and is basically ________________. A. two NPN transistors in parallel with a common base lead B. a diode in series with a temperature sensitive capacitor C. two ... -back SCR's with a common gate lead D. a triode tube with an extra heavy grid element
Description : Local action in a dry-cell, or lead-acid storage battery is the process whereby ________________. A. hydrogen gas is liberated B. the electrolyte compensates for overcharging C. potassium hydroxide ... carbon dioxide from the air D. the battery becomes discharged without being connected to a load
Description : The number of cells in a 12 volt lead-acid battery is ________________. A. three cells B. four cells C. six cells D. twelve cells
Description : A molded-case circuit breaker provides protection against short circuits by using a/an ________________. A. electromagnet B. shading coil C. arc quencher D. burn away strip
Description : When troubleshooting electronic equipment, you should use a high impedance multimeter ________________. A. to prevent excess current flow through the meter that would damage it B. for AC measurements only ... being tested D. so as not to load down the circuit and obtain erroneous voltage readings