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What is the advantage of parallel staging over serial staging?

A

Increasing total efficiency

B

Less time consuming

C

More payload capacity

D

Aesthetics

Correct Answer: Increasing total efficiency

In case of parralel staging, unlike serial staging all the stages are simultaneously burnt thus getting rid of propellant mass much more quickly and producing more thrust. Due to this it has a better efficiency.

Question : On a T.V. channel, four serials A, B, C and D were screened, one on each day, on four consecutive days but not necessarily in that order. On which day was the serial C screened ?

Statements :
I. The first serial was screened on 23rd, Tuesday and was followed by serial D.
II. Serial A was not screened on 25th and one serial was screened between serials A and B.

A

I alone is sufficient while II alone is not sufficient

B

II alone is sufficient while I alone is not sufficient

C

Either I or II is sufficient

D

Neither I nor II is sufficient

E

Both I and II are sufficient

Parallel staging rockets are more efficient than the serial staging rockets.

A

True

B

False

Simplify : $${{{5 \over 3} \times {7 \over {51}}{\text{ of }}{{17} \over 5} - {1 \over 3}} \over {{2 \over 9} \times {5 \over 7}{\text{ of }}{{28} \over 5} - {2 \over 3}}}$$

A

$$\frac{1}{2}$$

B

4

C

2

D

$$\frac{1}{4}$$

Which of the following devices are specifically being used for converting serial to parallel and from parallel to serial respectively?

A

microcontroller

B

timers

C

counters

D

registers

Which devices are specifically being used for converting serial to parallel and from parallel to serial respectively?

A

timers

B

counters

C

registers

D

serial communication

The devices that convert serial to parallel and parallel to serial are called?

A

Serializer/Deserializer

B

Transmission converters

C

Multiplexer

D

Preemphasizer

An 8-bit serial in/serial out shift register is used with a clock frequency of 150 kHz. What is the time delay between the serial input and the Q3 output?

A

1.67 s

B

26.67 s

C

26.7 ms

D

267 ms

The transfer function of a discrete time LTI system is given by
$$H\left( z \right) = {{2 - {3 \over 4}{z^{ - 1}}} \over {1 - {3 \over 4}{z^{ - 1}} + {1 \over 8}{z^{ - 2}}}}$$
Consider the following statements:
S₁ : The system is stable and causal for
$$ROC:\left| z \right| > {1 \over 2}$$
S₂ : The system is stable but not causal for
$$ROC:\left| z \right| S₃ : The system is neither stable nor causal for
$$ROC:{1 \over 4} Which one of the following statements is valid?

A

Both S<sub>1</sub> and S<sub>2</sub> are true

B

Both S<sub>2</sub> and S<sub>3</sub> true

C

Both S<sub>1</sub> and S<sub>3</sub> are true

D

S<sub>1</sub>, S<sub>2</sub> and S<sub>3</sub> are all true

During serial reception, the buffer that receives serial bits and converts to a byte is

A

receive buffer 0

B

receive buffer 1

C

receive buffer 2

D

none

A serial subtractor can be obtained by converting the serial adder by using the _____________

A

1’s complement system

B

2’s complement system

C

10’s complement

D

9’s complement