A torque meter is calibrated to reference standards of mass, length and time each with 5 % accuracy. After calibration, the measured torque with this torque meter will have net accuracy of :

Question

A torque meter is calibrated to reference standards of mass, length and time each with 5 % accuracy. After calibration, the measured torque with this torque meter will have net accuracy of : (A) 15 % (B) 25 % (C) 75 % (D) 5 %

Tardigrade Admin · Accepted Answer

Dimensional formula for Torque [τ]=[ ML 2 T -2] Now Percentage error in torque = % τ= % M +2 % L 2 % T % τ=25 %

Q. A torque meter is calibrated to reference standards of mass, length and time each with 5\% accuracy. After calibration, the measured torque with this torque meter will have net accuracy of :

$15%$

$25%$

$75%$

$5%$

Dimensional formula for Torque
$[τ] = [M L^{2} T^{- 2}]$
Now
Percentage error in torque $= % τ = % M + 2$
$% L 2% T$
$% τ = 25%$