RRB JE CBT-2 Electrical · 22 Apr 2025 · Shift 2 — General Science
RRB Junior Engineer (JE) · previous year paper · 1 questions
1 sample questions out of 1 General Science questions from RRB JE CBT-2 Electrical · 22 Apr 2025 · Shift 2, with answers and Hindi and English explanations. All 1 are in the app.
1.
एक अल्टरनेटर में, यदि लोड शक्ति गुणक पश्चगामी से अग्रगामी में परिवर्तित हो जाता है, तो आर्मेचर प्रतिक्रिया प्रभाव _______________ में विस्थापित हो जाता है।
In an alternator, if the load power factor changes from lagging to leading, the armature reaction effect shifts from _______________.
- (A)विचुंबकन से क्रॉस-चुंबकनdemagnetising to cross-magnetising
- (B)चुंबकन से क्रॉस-चुंबकनmagnetising to cross-magnetising
- (C)क्रॉस-चुंबकन से विचुंबकनcross-magnetising to demagnetising
- (D)विचुंबकन से चुंबकनdemagnetising to magnetising
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Answer: (D)
विचुंबकन से चुंबकन
demagnetising to magnetising
पश्चगामी pf पर आर्मेचर प्रतिक्रिया मुख्य क्षेत्र का विरोध करती है (विचुंबकीय); अग्रगामी pf पर यह मुख्य क्षेत्र की सहायता करती है (चुंबकीय)। इकाई pf पर यह अनुप्रस्थ-चुंबकीय होती है।
At lagging pf the armature reaction opposes the main field (demagnetising); at leading pf it aids the main field (magnetising). At unity pf it is cross-magnetising.
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The rest, with answers and Hindi and English explanations, are free in the app, plus timed mock tests and a Daily 10.
The rest, with answers and Hindi and English explanations, are free in the app, plus timed mock tests and a Daily 10.
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