engineering recuitment UPPCL Technician Electrician 2022 Mock Test Electrician and Wireman Measuring Instruments
In a PMMC instrument gravity control is used for controlling torque (Tc). If Td is deflecting torque, θ is angle of deflection and I is current, then
1
Td ∝ I and Tc ∝ sin θ
2
Td ∝ I and Tc ∝ θ
3
Td ∝ I2 and Tc ∝ sin θ
4
Td ∝ I2 and Tc ∝ θ