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E Tips BD
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Education and Job Tips Bangladesh
Education and Job Tips Bangladesh

29 followers
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মৌলিক সংখ্যা মনে রাখার কৌশল শিখে নেই
=> ১ থেকে ১০ পর্যন্ত = ৪টি (২, ৩, ৫, ৭)। => ১১ থেকে ২০ পর্যন্ত = ৪টি (১১, ১৩, ১৭, ১৯)। => ২১ থেকে ৩০ পর্যন্ত = ২টি (২৩, ২৯)। => ৩১ থেকে ৪০ পর্যন্ত = ২টি (৩১, ৩৭)। => ৪১ থেকে ৫০ পর্যন্ত = ৩টি (৪১, ৪৩, ৪৭)। => ৫১ থেকে ৬০ পর্যন্ত = ২টি (৫৩, ৫৯)। => ৬১ থেকে ৭০ ...
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In case of 3-phase induction motors, plugging means
30. In case of 3-phase induction motors, plugging means A pulling the motor directly on line without a starter B locking of rotor due to harmonics C interchanging two supply phases for quick stopping D none of the above Check Answer Correct Answer: C Click ...
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The starting torque of a 3-phase squirrel cage induction motor is
29. The starting torque of a 3-phase squirrel cage induction motor is< A 1.5 times the full load torque B twice the full load torque C equal to the full load torque D none of the above Check Answer Correct Answer: A Click "Check Answer", find right Answer O...
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Which type of bearing is provided in small induction motors to support the rotor shaft?
28. Which type of bearing is provided in small induction motors to support the rotor shaft? A Cast iron bearings B Bush bearings C Ball bearings D none of the above Check Answer Correct Answer: C Click "Check Answer", find right Answer Option Check Answer ল...
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A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Then the motor
27. A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Then the motor A will continue running burning its two phases B will continue running burning its one phase C will continue running without any harm ...
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Size of a high speed motor as compared to low speed motorfor the same H.P. will be
26. Size of a high speed motor as compared to low speed motorfor the same H.P. will be A smaller B bigger C same D any of the above Check Answer Correct Answer: A Click "Check Answer", find right Answer Option Check Answer লেখায় ক্লিক করলে উত্তর অপশন দেখাবে...
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The power factor of an induction motor under no-load conditions will be closer to
25. The power factor of an induction motor under no-load conditions will be closer to A 0.2 leading B 0.2 lagging C unity D none of the above Check Answer Correct Answer: B Click "Check Answer", find right Answer Option Check Answer লেখায় ক্লিক করলে উত্তর অ...
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In a three-phase induction motor, the number of poles in the rotor winding is always
24. In a three-phase induction motor, the number of poles in the rotor winding is always A equal to number of poles in stator B more than the number of poles in stator C less than the number of poles in stator D zero Check Answer Correct Answer: A Click "Ch...
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The maximum torque in an induction motor depends on
23. The maximum torque in an induction motor depends on A rotor inductive reactance B square of supply voltage C frequency D all of the above Check Answer Correct Answer: D Click "Check Answer", find right Answer Option Check Answer লেখায় ক্লিক করলে উত্তর অ...
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If any two phases for an induction motor are interchanged
22. If any two phases for an induction motor are interchanged A the motor will burn B squirrel-cage induction motors only C the motor will run in reverse direction D the motor will not run Check Answer Correct Answer: C Click "Check Answer", find right Answ...
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