Multiple Choice Questions in Electronics Engineering Part 12

Multiple Choice Questions in Electronics Engineering Part 12

1.      Semi-conductors which are doped with either N or P types of impurities are called ______.

A.    Intrinsic

B.     P-type

C.    Extrinsic

D.    N-type

2.      Which of the basic timing circuits produces sharp trigger pulses directly?

A.    Blocking circuits

B.     Integrators

C.    Astable multi-vibrators

D.    Differentiators

3.      What is a three-terminal resistor with one or more sliding contacts which functions as an adjustable voltage divider?

A.    Voltage divider

B.     Rheostat

C.    Potentiometer

D.    Bleeder resistor

4.      How does synchro stator receive its voltage?

A.    Self-induction

B.     Direct power source

C.     Thermal board

D.    By magnetic coupling from the rotor

5.      This method of monolithic IC production, elements do not penetrate the substrate.

A.    Diffusion

B.     Evaporation

C.    Epitaxial

D.    Cathode splittering

6.      A major component of a computer that communicates results to computer user in printers, screens (CRT), and discs is called _______

A.    Input device

B.     Central unit

C.     Storage

D.    Output device

7.      How can a series-positive limiter be modified to limit unwanted negative portion of the input signal?

A.    Negative biasing

B.     Positive biasing

C.     Biasing

D.    Forward biasing

8.      What is the purpose of using a differential synchro instead of regular synchro?

A.    Handles more signals only

B.     Performs addition and subtraction functions only

C.     Handles two signals only

D.    Differentials synchros can handle more signal and also perform addition and subtraction functions

9.      The intensity of a magnetic field directly related to the magnetic force exerted by the field.

A.    Field intensity

B.     Magnetic flux

C.     Magnetic force

D.    Magnetic field

10.  IC production method to prevent unwanted interaction between elements within a chip.

A.    Evaporation

B.     Cathode splittering

C.    Isolation

D.    Diffusion

11.  Analysis of the spectrum of light or other form of electromagnetic radiation emitted or absorbed by a substance in order to investigate its structure.

A.    Fluoroscopy

B.     Calligraphy

C.    Spectroscopy

D.    Spectography

12.  Which of the following items are elements of a computer operating system?

                                                              i.      Control over input/output device

                                                            ii.      Organization and control of files

                                                          iii.      Control of program execution

                                                          iv.      Control of memory allocation to different programs.

                                                            v.      Only b, c and d

                                                          vi.      Only a, c and d

                                                        vii.      Only a, b and c

                                                      viii.      a, b, c and d

13.  Which of the following are advantages of non-servo controlled robot?

                                                              i.      High repeatedly

                                                            ii.      High speed operation

                                                          iii.      Low cost

                                                          iv.      Only a and b

                                                            v.      Only b and c

                                                          vi.      a, b and c

                                                        vii.      Only a and c

14.  Its purpose is to counteract armature reaction

A.    Armature windings

B.     Commutators

C.     Field windings

D.    Interpoles and compensating windings

15.  What type of servo system whose goal is to control the positive of the load?

A.    Accelerator servo

B.     Velocity servo

C.     Time servo

D.    Position servo

16.  A new concept in commercial aircraft where computers monitor aircraft systems reporting on their status only if requested by the pilot or if something is wrong and displayed on the screen when necessary.

A.    Virtual cockpit

B.     Real cockpit

C.    Glass cockpit

D.    The cockpit

17.  A basic requirement of a closed loop system (not present in open-loops) that enables present load position to be sensed.

A.    Input

B.     Overload

C.     Error signal

D.    Feedback

18.  Which is not a function of register in digital circuit?

A.    Data storage device

B.     Sequence generators

C.     Use in counters

D.    Use to block signal

19.  Which of the following material possesses permeabilities slightly less than that of free space?

A.    Diamagnetic

B.     Paramagnetic

C.     Ferromagnetic

D.    Non-magnetic

20.  An assembly of microcircuits or combination of microcircuits and discrete components packaged as replacement.

A.    Electronic module

B.     Microcircuit module

C.     PCB

D.    Minielectronics