Electronics and Communication Engineering - Electronic Devices and Circuits

16. 

A 2 bit binary multiplier can be implemented using

A. 2 I/P only
B. 2 I/P XORs and 4 I/P and gates only
C. two 2 I/Ps NOR and one XNOR gate
D. XOR gates and shift Register

Answer: Option B

Explanation:

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17. 

Secondary emission results

A. when temperature of metals is raised to a level above the crystallization temperature
B. when metals are subjected to strong magnetic fields
C. when light rays fall on the metal surface
D. when a high velocity beam of electrons strikes as metal surface

Answer: Option B

Explanation:

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18. 

Ohmic range of carbon composition resistors is

A. 10 to 100 ohms
B. 10 to 10 K ohms
C. 10 to 200 ohms
D. 10 to 25 M ohms

Answer: Option D

Explanation:

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19. 

The depletion layer consists of immobile ions.

A. True
B. False

Answer: Option A

Explanation:

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20. 

The output V-I characteristics of an Enhancement type MOSFET has

A. only an ohmic region
B. only a saturation region
C. an ohmic region at low voltage value followed by a saturation region at higher voltages.
D. an ohmic region at large voltage values. Preceded by a saturation region at lower voltages.

Answer: Option C

Explanation:

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