Related Questions

The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by
A $$\frac{{\text{C}}}{{\text{R}}}$$
B $$\frac{{\text{1}}}{{{\text{RC}}}}$$
C $${\text{RC}}$$
D $$\frac{{\text{R}}}{{\text{C}}}$$
পাত-দূরত্ব d এবং ধারকত্ব C. এমন একটি সমান্তরাল পাত ধারকের পাত দুটির মাঝখানে d/2 পুরুত্ববিশিষ্ট একটি ধাতব পাত স্থাপন করা হলো। নতুন ধারকত্ব কত হবে? (A metal plate of thickness d/2 is inserted between the plates of a parallel plate capacitor with plate separation d and capacitance C. What is the new capacitance?)
A C/d
B C/2
C 4Cd
D 2c
The time constant of the capacitance circuit is defined as the time during which voltage
A Falls to 36.8% of its final steady value
B Rises to 38.6% of its final steady value
C Rises to 63.2% of its final steady value
D None of the above
The transducers which requires an external power and their output is a measure of some variation such as resistance, inductance, capacitance etc., are called as
A Active transducer
B Primary sensor
C Passive transducer
D Self generating transducer
A leakage capacitor can be represented by a capacitance C and resistance R in parallel C.
A True
B False
If the RC time constant of an integrator is increased, as the time constant is increased.
A The capacitor charges more during a pulse and discharges less between pulses
B The capacitor charges less during a pulse and discharges more between pulses
C The capacitor charges more during a pulse and discharges more between pulses
D The capacitor charges less during a pulse and discharges less between pulses
In self cooled motors the cooling time constant is about ______ than the heating time constant because cooling conditions are worse at standstill.
A 2 to 3 times greater
B 3 to 4 times greater
C 4 to 5 times greater
D none of the above
A train travels from New York to Chicago, a distance of approximately 840 miles, at an average rate of 60 miles per hour and arrives in Chicago at 6:00 in the evening , Chicago time . At what hour in the morning, New York City time, did the train depart for Chicago time . At what hour in the morning , New York City time, did the train depart for Chicago ? ( Chicago time is one hour earlier than New York City time.)
A 4 : 00
B 5 : 00
C 6 : 00
D 7 : 00
In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be
A Greater than 1.0
B Less than 1.0
C Equal to zero
D Equal to 1.0
The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant __________ filtration.
A Rate
B Pressure
C Both A & B
D Neither A nor B

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