vector india entrance exam solution 2021: Digital electronic

Vector India Sample Paper Entrance Exam Digital Electronic Solution

DIGITAL

Q. A Bipolar transistor has a total number of

1. Two similarly doped regions 
2. Three Alternative doped Regions
3. Two Alternatively Doped Regions 
4. Three Similarly Doped Region

Ans-> b)Three Alternative doped Regions

Q. Which Transistor Current formula is Correct 

1. Ic=IB+Ie   
2. Ib=Ic+Ie   
3. Ie=Ib-Ic 
4. Ib=Ie-Ic

Ans-> b) Ib=Ic+Ie

Q. BJT is a___________________________

       a) voltage-controlled Device   b) rectifier

        c) Current Controlled Device   e)inverter

Ans-> c) Current Controlled Device 

Q. The sum of binary formats 10101010 and 01111 is __

1.       a) 128         
2.   b) 271         
3.  c)  200     
4. d) 252

Ans-> 271

Q. Which type of error was eliminated through the use of gray code

1. a) timing       
2. b) decoding         
3. c) encoding           
4. d) conversion

Ans-> b)

Q. If a parity bit is added to a four-bit word, how many output lines will be required after multiplexing?

1. 5       
2. 1     
3. 7       
4. 9

Ans-> a) 5

Q.  In a 100KHz four-stage frequency divider, if the CLEAR input to stage two is LOW, what will be the fourth stage output frequency?

1. 50 KHz 
2. 12.5 KHz         
3. 0.0KHz           
4. 25 KHz

Q. How many clock pulses are required to load 4-bit SIPO register and transfer the data to a output register.

1. 16   
2. 8       
3. 5         
4. 4

Ans-> a) 16

Q. Which type of device may be used to interface a parallel data format with an external equipment serial format ?

1. Key matrix       
2. Memory chip       
3. UART         
4. SIPO

Ans->  c)UART 

Q. If 00000111 in a register is shifted to read 00111000, the arithmetic operation is

1. X2       
2. X4         
3. X16         
4. X8

Ans-> d) X8

Additional Resources

[ vector india entrance exam solution 2021: C-programming ]

[ vector india entrance exam solution 2021: Digital electronic ]

[ vector india  entrance exam solution 2021:Micro Processor (8085/8086) ]

[ Vector India Sample paper entrance exam solution ]

Further Reading:

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