GATE 2022 : Measurements Quiz- 1

When the damping force is more than the optimum, the instrument will become

A dual trace CRO has …….. vertical and …… horizontal amplifier.

A Lissajou pattern observed on an oscilloscope is stationary and has 5 horizontal tangencies and 2 vertical tangencies. It the frequency of horizontal input is 1,000 Hz, then frequency of vertical input is?

A voltmeter of 400 Ω resistance and an ammeter of 0.04 Ω resistance are available. The value of resistance that can be measured by the ammeter-voltmeter method for which the two different circuit measurements give equal errors is-

In a Wheatstone Bridge circuit shown below, R₃ is the adjustable resistance with an accuracy of ±0.2% and R₁ and R₂ has an accuracy of ±0.5% and ±0.3% respectively.

If the value of R₃ at null position is 400Ω, the minimum value of R₂ is _____.