IndiaBIX

Computer Science - Electronic Principles

Exercise : Electronic Principles - Section 3
1.
Which one of the following statements is true for the voltages in a series RL circuit?
The total voltages is equal to the sum of the voltages across the resistance and inductance
The voltage always has the same amplitude and phase for every part of the circuit
The total voltage is less than the sum of the voltages across the resistance and inductance
The total voltage lags the total current by less than 90
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The core of an electromagnet is said to be in saturation when:
the core is permitted to move freely within the coil
an increase in current through the coil causes no further increase in the mmf
frequent changes in the direction of current through the coil causes heating effects in the core material
changing the polarity of the current in the coil changes the polarity of the magnetic field around the core
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
As the temperature increases, the current gain
increases
decreases
contant
can be any of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91?
200 W
1000 W
20 W
100 W
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Doubling the diameter of the coil in an inductor:
multiplies the value of inductance by two
reduces the value of inductance by one-half
reduces the value of inductance by one-fourth
multiplies the value of inductance by four
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers