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MCQs

Total Questions : 33 | Page 1 of 4 pages
Question 1. They were requested not to quarrel with others. Which one of the following options is the closest in meaning to the word quarrel?
  1.    make out
  2.    call out
  3.    dig out
  4.    fall out
 Discuss Question
Answer: Option D. -> fall out


-NA-


Question 2. In the summer of 2012, in New Delhi, the mean temperature of Monday to Wednesday was 41°C and of Tuesday to Thursday was 43°C. If the temperature on Thursday was 15% higher than that of Monday, then the temperature in °C on Thursday was
  1.    40
  2.    43
  3.    46
  4.    49
 Discuss Question
Answer: Option C. -> 46


-NA-


Question 3. Complete the sentence: Dare _______________ mistakes.
  1.    commit
  2.    to commit
  3.    committed
  4.    committing
 Discuss Question
Answer: Option A. -> commit


-NA-


Question 4. A continuous random variable X has a probability density function f(x) = e-x , 0 < x < ∞. Then P{X > 1} is
  1.    0.368
  2.    0.5
  3.    0.632
  4.    1.0
 Discuss Question
Answer: Option A. -> 0.368


-NA-


Question 5. The curl of the gradient of the scalar field defined by V = 2x2y + 3y2z + 4z2x is
  1.    4xyax + 6yzay + 8zxaz
  2.    4ax + 6ay + 8az
  3.    (4xy + 4z2)ax + (2x2 + 6yz)ay + (3y2 + 8zx)az
  4.    0
 Discuss Question
Answer: Option D. -> 0


-NA-


Question 6. Leakage flux in an induction motor is
  1.    flux that leaks through the machine
  2.    flux that links both stator and rotor windings
  3.    flux that links none of the windings
  4.    flux that links the stator winding or the rotor winding but not both
 Discuss Question
Answer: Option D. -> flux that links the stator winding or the rotor winding but not both


-NA-


Question 7. Square roots of -i , where i = √-1, are
  1.    i, -i
  2.    cos(-Ï€/4) + i sin(-Ï€/4), cos(3Ï€/4) + i sin(3Ï€/4)
  3.    cos(Ï€/4) + i sin(3Ï€/4), cos(3Ï€/4) + i sin(Ï€/4)
  4.    cos(3Ï€/4) + i sin(-3Ï€/4), cos(-3Ï€/4) + i sin(3Ï€/4)
 Discuss Question
Answer: Option B. -> cos(-Ï€/4) + i sin(-Ï€/4), cos(3Ï€/4) + i sin(3Ï€/4)


-NA-


Question 8. Given a vector field F = y2xax - yzay - x2az, the line integral ∫F. d 1 evaluated along a segment on the x-axis from x =1 to x = 2 is
  1.    "“2.33
  2.    0
  3.    2.33
  4.    7
 Discuss Question
Answer: Option B. -> 0


-NA-


Question 9. A 4-pole induction motor, supplied by a slightly unbalanced three-phase 50 Hz source, is rotating at 1440 rpm. The electrical frequency in Hz of the induced negative sequence current in the rotor is
  1.    100
  2.    98
  3.    52
  4.    48
 Discuss Question
Answer: Option B. -> 98


-NA-


Question 10. Two magnetically uncoupled inductive coils have Q factors q1 and q2 at the chosen operating frequency. Their respective resistances are R1 and R2. When connected in series, their effective Q factor at the same operating frequency is
  1.    q1 R1 + q2 R2
  2.    q1/R1 + q2/R2
  3.    (q1 R1 + q2 R2)/(R1 + R2)
  4.    q1 R2 + q2 R1
 Discuss Question
Answer: Option C. -> (q1 R1 + q2 R2)/(R1 + R2)


-NA-


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