IES EC Government Jobs Exams Logical Reasoning Number Series

Q. A coil is turned to resonance of 500 kHz with a resonating capacitor of 36 pF. At 250 kHz, the resonance is obtained with resonating capacitors of 160 pF. What is the self capacitance of the coil?

Option
a) 2.66 pF
b) 5.33 pF
c) 8 pF
d) 10.6 pF

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IES EC Other Question

Q. Which one of the following statements is not correct?

Option
a) Data loggers are usually of digital types
b) A digital voltmeter is essentially and A-D converter
c) A servo-type potentiometric recorder has a frequency response better than that of a galvometric recorder
d) In digital transducers, there are ergonomic advantages in presenting digital data. Q. In a step-graded p-n junction diode, what is the ratio of depletion region penetration depths into p and n regions (if the ratio of accentur to donor impurity atoms densities of 1:2)?

Option
a) 2 : 1
b) 4 : 1
c) 1 : 2
d) 1 : 4