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Free download in PDF Electronics and Instrumentation General Knowledge MCQs & Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
81
_____________ is also known as halftone storage or mersh storage.
[A]
Variable persistence storage
[B]
Bistable storage
[C]
Flat storage
[D]
CRT
Answer: Variable persistence storage
82
The resolution limit of electron microscope is
[A]
2 A.V
[B]
1 A.V
[C]
1.5 A.V
[D]
1.2 A.V
83
The slewing speed of X-Y recorder is
[A]
1.5 m/s
[B]
1.6 m/s
[C]
1.3 m/s
[D]
1.4 m/s
84
In strip chart recorders, the self balancing potentiometers plot emf as a function of
[A]
Time
[B]
Pressure
[C]
Another emf
[D]
Frequency
85
In X-Y recorders, the self balancing potentiometers plot emf as a function of
[A]
Another emf
[B]
Frequency
[C]
Time
[D]
Pressure
86
Which of the following recorder gives slow response
[A]
Galvanometric
[B]
Magnetic
[C]
X-Y recorder
[D]
Oscillographic
87
The shorter wave length of the electron permits the detailed examination of tiny objects due to reduction of ___________ effects
[A]
Reflection
[B]
Diffraction
[C]
Refraction
[D]
Polarization
88
Duration of rotation of pen in the PMMC system depends upon ___________
[A]
Direction
[B]
Magnitude
[C]
Phase angle
[D]
Frequency
89
In electron microscope the projection of the motion on a plane normal to magnetic
induction (B) will be a circle of radius (r) =
[A]
mVsin?+eB
[B]
mVsin?/eB
[C]
mVsin?-eB
[D]
mVsin?*eB
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