which motor has the maximum speed DC series motor 65 which motor should not be

Which motor has the maximum speed dc series motor 65

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64. which motor has the maximum speed ? (DC series motor) 65. which motor should not be used without load ? (DC series motor) 66. what is power factor ? (true power /apparent power) 67. modulation scheme having highest data rate ? 68. which element produces less resistance at 0Hz frequency ? (Inductor) 69. power electronics is involved in ? converter inverter etc ? 70. which type of converters are fly back converters ? (DC-DC and AC-DC) 71. diodes are used in ? rectifier ? inventor (I couldn’t figure out what it is :p ) 72. what is the range of torque angle (ya pta nhn konsa angle tha ) 1-3, 3-5, 15-30 , 2-3 degrees ? 73. why transformer parameters cannot be measured by input output method ? (due to losses mere khyal se) 74. how many bits are there in IP address ? (32) 75. link layer is another name of which layer? 76. Which country flag bears a maple leaf on it ? (Canada) 77. What is the literal meaning of word “Qiblah” ? (Something in front of you) 78. Accuracy in terms of precision and resolution? 79. Darlington pair? 80. Temperature co-efficient of semiconductors?
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81. Boost strap insulator? 82. Techniques of pulse code modulation? 83. Drum timer? 84. Terms like “fan out and fan in”? (“maximum number of outputs” connected to an IC out pin like “how many gates can be driven from the output of one gate” ) 85. Mercury arc rectifier? 1. What is the zero sequence current if fault current is 90A? 30A 2. Increase directivity of antenna depends on? a) high gain high bandwidth, b)low gain low bandwidth, c) high gain low bandwidth, d) low gain high bandwidth 3. AMPS uses? FM, FSK, PSK?? 4. GSM uses? TDMA, FDMA??? 5. Which modulation has higher data rates? FM, AM, QAM, QPSK ?? 6. Fly back converter for? dc/dc, ac/dc, dc/ac, ac/ac conversion ??? 7. Series capacitance in transmission line for? steady state stability, protection ??
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