124. When a lead-acid battery begins gassing freely while receiving a normal charge, what should you do when charging?

84. Encrusted dirt accumulated inside a motor should be removed with a

105. Complete maintenance of electrical motors should include periodic checks for machine

118. Which of the listed precautions should be observed before spraying liquid solvent on the insulation of an electric motor?

66. The removal of paint from electrical equipment such as generators, should be cautiously undertaken because

95. What can you do if the generator is exposed to rain or any water?

100. Which of the following statements concerning analog and digital devices are correct?

89. What electrical apparatus can test insulating efficiency in an electric installation?

107. If a delicate component must be soldered into a circuit the component may be protected from the heat of the soldering process by.

83. The air gap provided an induction motor should be checked periodically with a feeler gage to detect

123. Which device that commonly utilizes the principle of electromagnetic induction?

110. Which of the following statements is true concerning the cleaning of electrical contacts?

101. When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter's pointer ?

75. A common type of protective covering used on electrical conductors is,

115. What is the first step to properly use a hook-on-type voltammeter in checking current flow?

92. Any electric motor can be constructed to be?

71. A fuse the blows often should be replaced only with a fuse of __.

94. Which of the following statements concerning the maintenance of solid-silver Contacts in relay and auxiliary control circuits is correct?

122. How will you remove a tubular fuse from a fuse panel with ?.

78. Electrically operated safety devices on auxiliary diesel engines functions to stop the engine by

70. Before working on an electric motor starter panel located on the main deck, what should you do FIRST?

116. Upon failure of the normal power supply, the emergency generator is placed on the line by the

86. When a replacing a fuse with one of a higher rating than the original, which of the following is true?

65. Which of the following data is required to draw the circle diagram for an induction motor?

76. The air gap provided in induction motors should be checked periodically with a feeler gage to detect an unequal air gap and

68. If a small electric motor is immersed in salt water it should be I. washed in fresh water II. dried in an oven III. blow air until it dries

106. The automatic voltage regulators provide on switch boards has function to

96. What is the cause when an alternator failed to produce line voltage?

102. In using the Rheostat, what do you call the circuit of the motor to adjust the speed?

103. How can you restore the charge of a lead-acid battery?

69. To carry out an insulation resistance test, one terminal of the megohmmeter should be connected to the winding, with the other terminal being connected to the

117. Where a thermal-acting breaker is required to be used in an area of unusually high, low, or constantly fluctuating temperatures, an ambient compensating element must be used. What does this element consist of?

85. A temperature instrumentation system to an engine room console consists of a resistance temperature detector (RTD), a measuring bridge circuit , and a meter (or alarm circuit). Which of the following statements is true concerning the measuring bridge circuit?

77. A temperature instrumentation system for an accomodation reefer room consists of a resistance temperature detector (RTD), a measuring bridge circuit and a meter or alarm circuit. Which of the following is true concering the measuring bridge circuit ?

127. Two contributors of electronic console failures are heat and vibration. To combine some of their effect, preventive maintenance procedures should include

98. Regulations require each motor controller to have a wiring diagram located

108. What maximum voltage can Class 00 electrical insulating rubber gloves can be used?

72. Electrical Insulating rubber gloves should be dielectrically tested every how many months?

126. What is a three-layer bidirectional device used primarily as a trggering device with junctions heavily and equally doped?

93. A common type of protective covering used on electrical conductors is

113. While trouble shooting a circuit in an engine room central control console, a resistor is suspected of being faulty. Which of the following precautions must be observed if an ohm meter is to be use to check its value?

81. The division of kilowatt load between two paralleled alternators is determined by the ?.

87. The purpose of a motor under voltage protection device is to

62. What is used in most for starting three-phase induction motors of five (5) horsepower or less ?

80. The proper way to apply plastic electrical tape to an electric cable splice is to

114. Which of the following statements best describes the material known as varnished cambric?

99. A device which can be used to check the calibration of a circuit breaker is a

63. Periodic testing of circuit breakers is necessary to assure that a correct rated and properly installed unit

79. A molded-case circuit breaker provides protection against short circuits by using alan ?

104. In an impressed current cathodic protection system, what is anode

97. Moisture as a result of condensation occurring inside of the cargo winch master switches, can be reduced by?

74. A self-excited DC generator fails to come up to its normal 440 volts. What could be the probable cause?

90. When reading electrical motor controller diagrams, it helps to know that

64. You are testing the insulation in an AC generator with with a megohmeter. the resistance value of a dry, clean winding will_

82. What is the result if the solenoid coil burns on a cargo winch with an electrical brake?

109. Which of the following statements represents the FIRST step in seating new brushes on slip rings?

125. In the circle diagram for induction motor, the diameter of the circle represents

73. It is a type of temperature sensor that has the characteristic of being very accurate, linear and has a good long term stability.

121. How much is the typical resistance of the body from hand to foot when dry?

91. What devices is fitted to prevent the generator windings from absorbing moisture while at standstill?

120. The insulation resistance of electric equipment and machinery should be tested for lowest normal insulation valves

119. The electrolyte in a lead-acid storage battery consists of distilled water and ?

88. The power scale of circle diagram of an induction motor can be found from

112. What would indicate ground in a particular phase 3 - phase low voltage distribution system?

111. What indicates the third color band on a resistor?

67. A reversible electric motor with worm gear that is connected to the flywheel to position engine parts is the