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Total Questions : 441 | Page 42 of 45 pages
Question 411. 8. The cap influenced
  1.    plate are
  2.    plate se
  3.    nature of
  4.    all of the
 Discuss Question
Answer: Option D. -> all of the
Question 412. 0. What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it?
  1.    It will become magnetic
  2.    It will melt
  3.    It will get punctured or cracked
  4.    Its molecular structure will get changed
 Discuss Question
Answer: Option C. -> It will get punctured or cracked
Question 413. 1.  A capacitor of 80 ttF is charged to a p.d. of 250 V. The charge acquired by it is
  1.    0.02 C
  2.    0.2 C
  3.    0.3 C
  4.    0.4 C
 Discuss Question
Answer: Option A. -> 0.02 C
Question 414. 6. A variable capacitor of 100 pf carries a charge of 0.35 pC. The capacitance is subsequently reduced to 40 pF. The voltage appealing across the capacitor after reduction of its capacitance will be
  1.    8750 V
  2.    4350 V
  3.    2000 V
  4.    1500 V
 Discuss Question
Answer: Option A. -> 8750 V
Question 415. 2. If an ohmmeter reading immediately goes practically to zero and stays there, capacitor is
  1.    charged
  2.    short-circuited
  3.    lossy
  4.    satisfactory
 Discuss Question
Answer: Option B. -> short-circuited
Question 416. 5. The presence of an uncharged conductor near a charged one increases the
  1.    charge of the charged conductor
  2.    capacity of the charged conductor
  3.    potential of thecharged conductor
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Question 417. 3.  Voltage applied across a dielectric produces an electrostatic field 50 times greater than air. The dielectric constant of the dielectric will be
  1.    5
  2.    10
  3.    20
  4.    50
 Discuss Question
Answer: Option D. -> 50
Question 418. 4. Out of the fallowing capacitors of identical rating which one will have the smallest dimensios?
  1.    Aluminium foil capacitor
  2.    Mica capacitor
  3.    Ceramic capacitor
  4.    Paper capacitor
 Discuss Question
Answer: Option C. -> Ceramic capacitor
Question 419. 9. Which of the following statements is correct?
  1.    Mica capacitors are available in capacitance values of 5 to 20 RP
  2.    air capacitors have a black band to indicate the outside foil
  3.    Electrolytic capacitors must be connected in correct polarity
  4.    Ceramic capacitors must be connected in correct polarity
 Discuss Question
Answer: Option C. -> Electrolytic capacitors must be connected in correct polarity
Question 420. 8. The ohmmeter reading for a short circuited capacitor is
  1.    infinity
  2.    few kilo ohms
  3.    few megaohms
  4.    zero
 Discuss Question
Answer: Option D. -> zero

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