1
GATE EE 2017 Set 1
Numerical
+1
-0
The following measurements are obtained on a single phase load: $$V = 220 V$$ $$\pm$$$$1$$%. $${\rm I}$$$$= 5.0$$ $$A$$ $$\pm \,1$$% and $$W=555$$ $$W$$ $$\pm \,2$$%. If the power factor is calculated using these measurements, the worst case error in the calculated power factor in percent is _________. (Give answer up to one decimal place.)
2
GATE EE 2017 Set 2
+1
-0.3
Two resistors with nominal resistance values $${R_1}$$ and $${R_2}$$ have additive uncertainties $$\Delta {R_1}$$ and $$\Delta {R_2},$$ respectively. When these resistances are connected in parallel, the standard deviation of the error in the equivalent resistance $$R$$ is
A
$$\pm \sqrt {{{\left( {{{\partial R} \over {\partial {R_1}}}\Delta {R_1}} \right)}^2} + {{\left( {{{\partial R} \over {\partial {R_2}}}\Delta {R_2}} \right)}^2}}$$
B
$$\pm \sqrt {{{\left( {{{\partial R} \over {\partial {R_2}}}\Delta {R_1}} \right)}^2} + {{\left( {{{\partial R} \over {\partial {R_1}}}\Delta {R_2}} \right)}^2}}$$
C
$$\pm \sqrt {{{\left( {{{\partial R} \over {\partial {R_1}}}} \right)}^2}\Delta {R_2} + {{\left( {{{\partial R} \over {\partial {R_2}}}} \right)}^2}\Delta {R_1}}$$
D
$$\pm \sqrt {{{\left( {{{\partial R} \over {\partial {R_1}}}} \right)}^2}\Delta {R_1} + {{\left( {{{\partial R} \over {\partial {R_2}}}} \right)}^2}\Delta {R_2}}$$
3
GATE EE 2015 Set 2
Numerical
+1
-0
A capacitive voltage divider is used to measure the bus voltage Vbus in a high-voltage 50Hz AC system as shown in the figure. The measurement capacitors C1 and C2 have tolerances of $$\pm$$10% on their nominal capacitance values. If the bus voltage Vbus is 100 kV rms, the maximum rms output voltage Vout (in kV), considering the capacitor tolerances, is __________.
4
GATE EE 1995
Fill in the Blanks
+1
-0
Fringing in capacitive type transducer can be minimized by providing a _________
EXAM MAP
Medical
NEET