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61.

A three-phase current source inverter used for the speed control of an induction motor is to be realized using MOSFET switches as shown below. Switches S₁ to S₆ are identical switches

The proper configuration for realizing switches S₁ to S₆ is [1 mark]

asked in Electrical Engineering, 2011

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62.

If 137+276=435 how much is 731+672? [2 marks]
(A) 534
(B) 1403
(C) 1623
(D)1513

last reply by CpjJwWHV • 11 years ago • asked in Electrical Engineering, 2010

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63.

Given digits 2,2,3,3,4,4,4,4 how many distinct 4 digit numbers greater than 3000 can be formed? [2 marks]
(A) 50
(B) 51
(C) 52
(D) 54

asked in Electrical Engineering, 2010

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64.

Modern warfare has changed from large scale clashes of armies to suppression of civilian populations. Chemical agents that do their work silently appear to be suited to such warfare; and regretfully, there exist people in military establishments who think that chemical agents are useful tools for their cause.
Which of the following statements best sums up the meaning of the above passage: [2 marks]
(A) Modern warfare has resulted in civil strife.
(B) Chemical agents are useful in modern warfare.
(C) Use of chemical agents in warfare would be undesirable
(D) People in military establishments like to use chemical agents in war.

asked in Electrical Engineering, 2010

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65.

5 skilled workers can build a wall in 20days; 8 semi-skilled workers can build a wall in 25 days; 10 unskilled workers can build a wall in 30days. If a team has 2 skilled, 6 semi-skilled and 5 unskilled workers, how long will it take to build the wall? [2 marks]
(A) 20
(B) 18
(C) 16
(D) 15

asked in Electrical Engineering, 2010

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66.

Hari (H), Gita (G), Irfan (I) and Saira (S) are siblings (i.e. brothers and sisters). All were born on 1st January. The age difference between any two successive siblings (that is born one after another) is less than 3 years. Given the following facts:
i. Hari’s age + Gita’s age > Irfan’s age + Saira’s age
ii. The age difference between Gita and Saira is 1 year. However Gita is not the oldest and Saira is not the youngest.
iii. There are no twins.
In what order were they born (oldest first)? [2 marks]
(A) HSIG
(B) SGHI
(C) IGSH
(D) IHSG

asked in Electrical Engineering, 2010

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