What are the physics Viva questions?
Physics Practical viva-voce Questions-2019.
Why current is low in ammeter?
Just like voltmeters, ammeters tend to influence the amount of current in the circuits they’re connected to. However, unlike the ideal voltmeter, the ideal ammeter has zero internal resistance, so as to drop as little voltage as possible as current flows through it.
Which type of transformer is used in Sonometer experiment and what is it *?
These items are used to determine the frequency of A.C. mains by sonometer method. This apparatus consists of a suitable electromagnet with step down transformer offixed voltages 6V & 8V and has a current capacity 2A.
Is ammeter connected in series?
In order for an ammeter to measure a device’s current, it must be connected in series to that device. This is necessary because objects in series experience the same current. Ammeter in Series: An ammeter (A) is placed in series to measure current. All of the current in this circuit flows through the meter.
Why voltmeter is connected parallel?
In order to measure a device’s voltage, a voltmeter is connected in parallel to a device. This setup is important as objects in parallel usually tend to experience the same potential difference. It is connected in parallel with the circuit mainly because the same voltage drop occurs across it.
Why horseshoe magnet is used in Sonometer experiment?
A horse shoe magnet is placed at the middle of the sonometer wire so that the magnetic field is applied perpendicular to the sonometer wire in a horizontal plane. So a force will act on the conductor in a direction perpendicular to both the field and the direction of current.
What is the aim of Sonometer experiment in physics lab?
To study the relation between the length of a given wire and tension for constant frequency using sonometer.
How do I prepare for Viva boards?
Be prepared for viva type questions rather than descriptive questions. Be well prepared on atleast 2 or more chapters because examiners are likely to offer you with an option about the topic to start viva from. So be prepared for such juicy moments and don’t let go in vain.
How practical exams are conducted?
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