Description : If the values of 'C' and 'R' shown in the illustration were 1 microfarad and 3 Megohms respectively, at what listed time would 'C' be considered fully charged? EL-0086 A. 0.33 second B. 3 seconds C. 6 seconds D. 15 seconds
Last Answer : Answer: D
Description : If the values of 'C' and 'R' shown in the illustration were 1 microfarad and 100 kOhms, which of the listed time intervals would equal one 'time constant'? EL-0086 A. 0.1 second B. 0.2 second C. 0.5 second D. 5.0 seconds
Last Answer : Answer: A
Description : If the values of C and R shown in the illustration were 1-microfarad and 3- Megohms respectively, which of the listed intervals would equal one 'time constant'? EL-0086 A. 0.33 second B. 3 seconds C. 6 seconds D. 15 seconds
Last Answer : Answer: B
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 : What is the value of the capacitor in the astern valve position circuit shown in the illustration? EL-0099 A. 100 kFarad B. 0.5 microfarad C. 0.5 millifarad D. 50 kFarad
Description : RC time constant characteristics, as shown in the illustration, are important in _____________. EL-0086 A. bridge rectifiers for alternator excitation B. timing and pulse shaping circuits C. transistor power amplifier biasing D. motor controller overload protection
Description : The arrow drawn through the resistor shown in the illustration indicates that it is _____________. EL-0086 A. for use in low power applications B. a carbon composition type C. a wire-wound type D. one whose resistance is variable
Description : As shown in the illustration if the applied voltage is 12 VDC, the resistance of R1 is 24 kohms, and R2 is 3610 ohms what is the current flowing through R1? EL-0036 A. .434 milliamps B. .005 amp C. 6.00 amps D. 2.4 milliamps
Description : As shown in the illustration if the applied voltage is 12 VDC, the resistance of R1 is 110 ohms, and R2 is 10 kohms what is the total power consumed by the circuit? EL-0036 A. 3.6 watts B. 72 watts C. .0011286 watts D. .014243 watts
Description : As shown in the illustration if the applied voltage is 12 VDC, the resistance of R1 is 110 ohms, and R2 is 10 kohms what is the voltage measured across R1 EL-0036 A. 11.86 volts B. .131 volts C. 12 volts D. .673 volts
Description : As shown in the illustration, which listed action will occur first when push button 'Q' is depressed? EL-0017 A. Contacts 'H-1', 'H-2' and 'H-3' close. B. Contact 'H-4' closes. C. Operating coil 'C' energizes. D. Switch 'R' opens.
Last Answer : Answer: C
Description : On the meter scale illustrated, while using the R X 100 scale, the reading at 'F' will be ____________. EL-0047 A. 60 ohms B. 40 ohms C. 30 ohms D. 3 kohms
Description : On the meter scale illustrated, while using the R X 100 scale, the reading at 'B' will be ____________. EL-0047 A. 70 ohms B. 35 ohms C. 700 ohms D. 7 kohms
Description : On the meter scale illustrated, while using the R X 100 scale, the reading at 'C' will be ____________. EL-0047 A. 13 ohms B. 130 ohms C. 1.3 kohms D. 13 kohms
Description : On the meter scale illustrated, while using the R X 100 scale, the reading at 'A' will be ____________. EL-0047 A. 2,000 ohms B. 20 Kohms C. 200 Kohms D. 3 Megohms
Description : If the circuit shown in the illustration were energized and operating properly, which of the devices listed would be open? EL-0007 A. The stop push-button B. The start push-button C. Contact 'Ma' D. Contact 'OL1'
Description : Which of the listed conditions occur when '4th point lower' is selected on the winch shown in the illustration? EL-0102 A. Master switch contacts '3', '4', '6', '8', '9', & '10' close. B. Contactors '2, 3, & 4M' and ' ... , '7', '8', and '9' close. D. Contactors '1 & 3M' and '1, 2, & 3A' pick up.
Description : Which of the listed conditions occur when selection is made for 'third point hoist' on the winch shown in the illustration? EL-0102 A. Master switch contacts '5', '6', '7', '8', and '9' close. B. Contactors '2M', ' ... ' and '2A' drop out. D. Master switch contacts '3','4', '6', '8', and '9' close.
Description : If the inputs to the diagram shown in the illustration were J=1, K=0, H=0, L=1, M=1, what logic levels would be indicated at points 'X' and 'Y' respectively? EL-0089 A. 0,0 B. 0,1 C. 1,0 D. 1,1
Description : If the inputs to the diagram shown in the illustration were J=1, K=1, H=0, L=1, M=1, what logic levels would be indicated at points 'X' and 'Y' respectively? EL-0089 A. 0,0 B. 0,1 C. 1,0 D. 1,1
Description : If the inputs to the diagram shown in the illustration were J=0, K=0, H=1, L=0, M=1, what logic levels would be indicated at points 'X' and 'Y' respectively? EL-0089 A. 0,0 B. 0,1 C. 1,0 D. 1,1
Description : If the inputs to the diagram shown in the illustration were J=1, K=0, H=1, L=1, M=0, what logic levels would be indicated at points 'X' and 'Y' respectively? EL-0089 A. 0,0 B. 0,1 C. 1,0 D. 1,1
Description : As shown in the illustration, which of the listed actions of the synchroscope pointer is occurring? EL-0002 A. Revolving slowly in the slow direction. B. Revolving rapidly in the slow direction. C. ... stationary at the 12 o'clock position since the leading edges of the A phases are in phase.
Description : As shown in the illustration, which of the operations listed will happen when the 'jog button' is pushed? EL-0010 A. Coil 'CR' closes the normally open 'CR' contacts. B. Coil 'M' opens contact 'M'. C. Coil 'M' closes contact 'M'. D. Contact 'M' remains open despite the jog button being pushed.
Description : If the motor shown in the illustration will not start when 'Q' is depressed, which of the listed components should be checked FIRST? EL-0017 A. Fuses 'F-1' and 'F-2'. B. Operating coil 'C'. C. Contacts 'H-1', 'H-2', and 'H-3'. D. Contact 'H-4'.
Description : Which of the listed electrical devices is represented by the symbol shown in the illustration? EL-0055 A. Fixed resistance resistor B. Coil with magnetic core C. DC motor or generator shunt field D. Transformer
Description : As shown in the illustration, the electrical symbol is used to indicate which of the listed types of motors? EL-0054 A. Shunt motor. B. Series motor. C. Compound motor. D. Tri-field motor.
Description : Which of the devices listed is indicated by the electronic symbol lettered as 'A', shown in the illustration? EL-0016 A. Thyristor B. Diode C. Capacitor D. Transistor
Description : When the master switch for the winch shown in the illustration is in the 'off' position, and the line & safe switches are closed, which of the listed relays should be energized? EL-0102 A. 'DB' & '2T' B. 'DB' & '4M' C. 'FR-B.O.' & 'LV' D. '1M' & '1A'
Description : The winch shown in the illustration operates in any of the positions with the master switch in the 'lower' direction, but will not 'hoist' in any of the master switch hoist positions. Which of the listed faults ... '2M' in the power circuit may be badly corroded. D. Series relay 'FR' may be open.
Description : The schematic diagram shown in the illustration represents which of the listed solid-state circuits? EL-0069 A. Bridge rectifier B. Magnetic amplifier C. Flip-flop generator D. Cathodic amplifier
Description : Which of the devices listed is indicated by the symbols lettered 'A' to 'F', shown in the illustration? EL-0016 A. Diodes B. Linear inductors C. Capacitors D. Transistors
Description : As shown in the illustration, which of the elements listed does the line 'B' represent in the basic schematic symbol of a PNP transistor? EL-0068 A. Base B. Emitter C. Cathode D. Collector
Description : Which of the listed figures shown in the illustration represents devices connected in a three-phase delta-delta arrangement? EL-0084 A. A B. B C. C D. D
Description : Due to its construction, the component in figure 'A' shown in the illustration has which of the listed advantages compared to bipolar devices? EL-0078 A. Operates with higher voltages and ... as a controllable rectifier. D. Has very high input resistance and uses practically no gate current.
Description : Which of the listed figures shown in the illustration represents devices connected in a three-phase delta-wye arrangement? EL-0084 A. A B. B C. C D. D
Description : Which of the listed figures shown in the illustration represents devices connected in a three-phase wye-delta arrangement? EL-0084 A. A B. B C. C D. D
Description : Which of the listed figures shown in the illustration represents devices connected in a three-phase wye-wye arrangement? EL-0084 A. A B. B C. C D. D
Description : Which of the listed types of lighting circuits does the diagram shown in the illustration represent? EL-0081 A. High pressure sodium B. Low voltage quartz C. Mercury vapor D. Standard fluorescent
Description : You are performing an out-of-circuit test of the semi-conductor shown in the illustration. Using an ohmmeter on 'low power' position and with leads properly installed, which of the listed results would you expect the ... lead on 'B' and black lead on 'A'; and a low reading with the leads reversed.
Description : You are performing an out-of-circuit test of the semi-conductor shown in the illustration. Using an ohmmeter on 'low power' position and with leads properly installed, which of the listed results would indicate a good ... lead on 'A' and red lead on 'C'; and a high reading with the leads reversed.
Description : You are performing an out-of-circuit test on the semi-conductor shown in the illustration. Using an ohmmeter on 'low power' setting and with leads properly inserted, which of the listed results would indicate a good ... lead on 'A' and red lead on 'C'; and a high reading with the leads reversed.
Description : As shown in the illustration, which of the listed types of motor controllers and starters is indicated? EL-0012 A. Across-the-line B. Capacitor C. Autotransformer D. Part-winding
Description : Which of the listed ranges represents specific gravity corrected for temperature for the electrolyte of a fully charged portable lead-acid battery? A. 1.100 to 1.150 B. 1.180 to 1.200 C. 1.280 to 1.300 D. 1.750 to 2.000
Description : As shown in the illustration, which set of conditions, evident to the operator and the 'setpoint module' respectively, will result in a high exhaust temperature alarm on the 'starboard main engine'? EL-0094 A. 50°F and 3.3 volts B. 180°F and 6.0 volts C. 750°F and 0-10 volts D. 900°F and 7.5 volts
Description : If the outputs marked 'Q' of 'FF-A', 'FF-B' and 'FF-C' in the circuit shown in the illustration are at logic levels 0, 1, and 1 respectively, what levels are present at the 'NOT Q' outputs? EL-0087 A. 1, 0, and 1 B. 1, 0, and 0 C. 0, 0, and 1 D. 0, 1, and 1
Description : On the meter scale illustrated, while using the R X 1 scale, the reading at 'Z' will be ____________. EL-0047 A. 30 ohms B. 72 ohms C. 720 ohms D. 7.2 Kohms
Description : Batteries 'A' and 'B' shown in the illustration are 6 volts each and batteries 'C' and 'D' are 24 volts each. If 'A' and 'B' were reconnected to be in series-opposing to 'C' and 'D' ... at the top terminal C. 30 volts, negative at the bottom terminal D. 30 volts, positive at the bottom terminal
Description : The electrical diagram shown in the illustration shows _____________. EL-0021 A. 'R1', 'R2', and 'R3' are connected is series B. 'R1', 'R2', and 'R3' are connected in parallel C. the voltages measured across ... if 'R1', 'R2' and 'R3' have different values D. the total resistance equals R1 + R2 + R3
Description : As shown in the illustration, if 'R1' and 'R2' have unequal values, the ____________. EL-0019 A. voltage drop across 'R1' will not be equal to the voltage drop across 'R2' B. current flow ... energy dissipated in 'R2' D. current flow through 'R1' will differ from the current flow through 'R2'