# Samsung Papers: Sample Questions 13 - 15 of 15

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## Question number: 13

### Write in Short

If DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE then how THURSDAY will be written?

### Explanation

• DISTANCE = IDTUBECN and DOCUMENT = ODDVNTNE
• Here, in both the examples first two letters of the words are interchanged.
• Like, DI = ID and DO = OD
• Next three letters of the words are incremented by one position.
• Like, STA = TUB and CUM = DVN
• Last three letters of the words are written in the reverse order.
• Like, NCE = ECN and ENT = TNE
• We have to apply all these things to word THURSDAY.
• So, TH = HT
• Then URS = VST
• In last DAY = YAD
• So, THURSDAY will become HTVSTYAD.

## Question number: 14

MCQ▾

### Question

What minimum sampling frequency is required for 20 − 20 kHz analog signal? (2004)

### Choices

Choice (4) Response

a.

44.1 kHz

b.

20 kHz

c.

40 kHz

d.

20 Hz

c.

### Explanation

According to Nyquist Criteria the sampling frequency should be greater or equal to two times the signal frequency to remove the effects of aliasing effect. Here, highest signal frequency component is 20 kHz. So, to receive the correct signal at the receiver end the sampling frequency should be at least twice of it. So, sampling frequency should be 40 kHz.

## Question number: 15

### Write in Short

If length of rectangle of increases by 20 % and breadth decreases by 20 % then what will be the new area? (2004)

### Explanation

• Area of rectangle = length breadth
• Let the length of rectangle be l and breath be b. Then area of rectangle will be = l b
• Now length of rectangle is increased by 20%. So, new length will be = l + 20 % of l
• = 1.2l
• Breadth is decreased by 20%. So, new breadth will be = b - 20 % of b
• = 0.8b
• Now, new area will be =
• = 1.2 0.8
• = 0.96
• Here, = 0.96