What is the expression for acceleration? Change in velocity / time Mass x acceleration Force x displacement Mass x velocity TRUE ANSWER : ? YOUR ANSWER : ?
A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads (2 + √3/2)V. 2 V. 5 V. 0 V. TRUE ANSWER : ? YOUR ANSWER : ?
The high torque to weight ratio in an analog indicating instrument indicates low friction loss. nothing related to friction loss. none of these. high friction loss. TRUE ANSWER : ? YOUR ANSWER : ?
The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be 1% 0.5% 1.2% 1.5% TRUE ANSWER : ? YOUR ANSWER : ?
Which of following is a vector quantity? Flux density. Magnetic potential. Relative permeability. Magnetic field intensity. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the two have same dimensions? Angular velocity and angular frequency Force and stress None of these Force and strain TRUE ANSWER : ? YOUR ANSWER : ?
Most sensitive galvanometer is Vibration galvanometer Elastic galvanometer Duddle galvanometer Spot ballastic galvanometer TRUE ANSWER : ? YOUR ANSWER : ?
_______ is used to measure the flow of air around aeroplane. Anemometer. Orifice. Venturimeter. nucleus. TRUE ANSWER : ? YOUR ANSWER : ?
If an inductance is connected in one arm of the bridge and resistance is the remaining three arms The bridge cannot be balanced The bridge can always be balanced None of the listed here The bridge can be balanced if the resistance have some specific values TRUE ANSWER : ? YOUR ANSWER : ?
The measurment of very low and very high frequencies is invariably done using a frequency counter in which one of the following? Frequency measurment modes only. Period measurment modes only. Period and frequency measurement modes respectively. Frequency and period measurment modes, respectively. TRUE ANSWER : ? YOUR ANSWER : ?