(i) Bipolar link has two conductors (ii) Both conductors have same magnitude of voltage.

Consider the following statements: 1. The voltage developed across the OFF switches of the half-bridge converter is the maximum dc-link voltage. 2. In the full-bridge converter, the voltage across the primary of the transformer is the dc link voltage. 3. The voltage developed across the OFF switches of the full-bridge converter is half the maximum dc-link voltage. Which of the above statements are correct?

A

1, 2 and 3

B

1 and 3 only

C

1 and 2 only

D

2 and 3 only

Lightening conductors are used to protect building from lightning strikes. Which of the following statements is/are true about lightening conductors? 1) Lightening conductors create an electric field at its top that lightning strikes it preferentially 2) Lightning conductors reduce the effect of the strike by uniformly distributing the charge (current) over the surface of the building 3) Lightning conductors take all the charge (current) to deep down in the earth 4) Lightning conductors must be installed at a place taller than the building Select the correct answer using the code given below

A

1 and 2

B

3 and 4 only

C

1, 3 and 4

D

4 only

The magnitude of absolute angular velocity of link 2 is 10 rad/s while that of link 3 is 6 rad/s, what is the angular velocity of link 3 relative to link 2?

A

6 rad/s

B

16 rad/s

C

4 rad/s

D

14 rad/s

A 4-bar mechanism with all revolute pairs has link lengths lf = 20 mm, lin = 40 mm, lco = 50 mm and lout = 60 mm. The suffixes 'f', 'in', 'co' and 'out' denote the fixed link, the input link, the coupler and output link respectively. Which one of the following statements is true about the input and output links?

A

Both links can execute full circular motion

B

Both links cannot execute full circular motion

C

Only the output link cannot execute full circular motion

D

Only the input link cannot execute full circular motion

If the currents in the two conductors of bipolar HDVC link is same, then _______

A

ground current is zero

B

two poles work independently

C

ground current zero and two poles work independently

D

none of the mentioned

Consider the following three statements about link state and distance vector routing protocols, for a large network with 500 network nodes and 4000 links. [S1] The computational overhead in link state protocols is higher than in distance vector protocols. [S2] A distance vector protocol (with split horizon) avoids persistent routing loops, but not a link state protocol. [S3] After a topology change, a link state protocol will converge faster than a distance vector protocol. Which one of the following is correct about S1, S2, and S3?

A

S1, S2, and S3 are all true.

B

S1, S2, and S3 are all false

C

S1 and S2 are true, but S3 is false.

D

S1 and S3 are true, but S2 is false

Read the passage given below and the two statements that follow (given on the basis of the passage): Four men are waiting at Delhi airport for a Mumbai flight. Two are doctors and the other two are businessmen. Two speak Gujarati and two speak Tamil, No two of the same profession, speak the same language. Two are Muslims and two are Christians. No two of the same religions are of the same profession, nor do they speak the same language, The Tamil-speaking doctor is a Christian. 1. The Christian-businessman speaks Gujarati. 2. The Gujarati-speaking doctor is a Muslim. Which of the above statements is/are correct conclusion/conclusions ?

A

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Under which of the following conditions is Coriolis component encountered in the relative acceleration of two points ? 1. The two points are coincident but on different links. 2. The point on one link traces a path on the other link. 3. The link that contains the path rotates. Select the correct answer using the code given below :

A

1 and 2 only

B

1 and 3 only

C

2 and 3 only

D

1, 2 and 3

Frames of 1000 bits are sent over a 106 bps duplex link between two hosts. The propagation time is 25 ms. Frames are to be transmitted into this link to maximally pack them in transit (within the link). What is the minimum number of bits (i) that will be required to represent the sequence numbers distinctly? Assume that no time gap needs to be given between the transmission of two frames.

A

i = 2

B

i = 3

C

i = 4

D

i = 5

Homopolar link is employed instead of bipolar link to ___________

A

reduce corona loss

B

reduce radio interference

C

improve reliability

D

all of the mentioned

(i) Bipolar link has two conductors (ii) Both conductors have same magnitude of voltage.

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