Basic Electronic Physics Test 02

Total Questions: 26

1 - When we heat the metal at high temperature they emit:

A ) Holes
B ) Protons
C ) Neutrons
D ) Electrons ✅

3 - The cathode ray oscilloscope consists of main parts:

A ) Two
B ) Three ✅
C ) Four
D ) Five

4 - George Boolean invented:

A ) Boolean algebra ✅
B ) Arithmetic algebra
C ) Mean algebra
D ) Geometry

5 - The standard group of bits in digital electronics is:

A ) 5 bits
B ) 6 bits
C ) 7 bits
D ) 8 bits ✅

6 - Eight bits combine to form:

A ) A byte ✅
B ) Megabyte
C ) Kilobyte
D ) Gigabyte

7 - In C.R.O grid is always connected with potential:

A ) Negative ✅
B ) Positive
C ) High Positive
D ) Zero Positive

8 - The instruments which is used to display the magnitude of changing electric current is called:

A ) Evacuated tube
B ) Cathode rays Oscilloscope ✅
C ) Television tube
D ) Picture tube

9 - In a logic gate if X=A.B then X is “1” when:

A ) A = 0 or B =0
B ) A = 1 and B = 1 ✅
C ) A = 0 and B = 1
D ) A =1 and B = 0

10 - The more negative potential of grid, the more electrons will be:

A ) Attracted
B ) Repelled ✅
C ) Attracted as well as repelled
D ) Neither attracted nor repelled

11 - In medical field, C.R.O is used to display:

A ) Heart beats ✅
B ) Pictures of organs
C ) Pictures of bones
D ) Blood pressure

12 - LDR can act as:

A ) Diode
B ) Switch ✅
C ) Transistor
D ) Rectifier

13 - Which gate is used for safety alarm?

A ) AND ✅
B ) NAND
C ) OR
D ) NOR

14 - AND operation is represented by:

A ) Dot (.) ✅
B ) Addition (+)
C ) Division (÷)
D ) Minus (-)

15 - In OR operation inputs are connected as:

A ) Series
B ) Parallel ✅
C ) Both series or parallel
D ) None of these

16 - OR operation is represented by:

A ) (×) sign
B ) ÷ sign
C ) + sign ✅
D ) - sign

17 - Which combination form NAND gate!

A ) AND & OR
B ) AND & NOT ✅
C ) NOT & OR
D ) NAND & NOR

18 - J.J Thomson observed deflection of cathode rays in:

A ) 1895
B ) 1896
C ) 1897 ✅
D ) 1898

19 - The screen of a cathode ray tube consists of a thin layer of:

A ) Sodium
B ) Nitrogen
C ) Oxygen
D ) Phosphorus ✅

20 - NOT gate is also called:

A ) Converter
B ) Inverter ✅
C ) Transmitter
D ) Receiver

21 - At room temperature, electrons cannot escape the metal surface due to ____ of atomic nucleus:

A ) Repulsive Forces
B ) Attractive Forces
C ) Gravitational Forces
D ) Electromagnetic Forces ✅

22 - Which is used to investigate the properties of electron beam?

A ) LDR
B ) Electroscope
C ) Proton Gun
D ) Electron Gun ✅

24 - In case of OR and AND operation, if switcheds S1 and S2 both are open then lamp is

A ) On
B ) Off ✅
C ) Sometimes on and sometimes off
D ) neither on or off

25 - One bite is equal to:

A ) 4 bits
B ) 6 bits
C ) 8 bits ✅
D ) 10 bits

26 - The branch of physics which deals with the control of motion of electrons is:

A ) Mechanics
B ) Dynamics
C ) Nuclear physics
D ) Electronics ✅