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ESE 2019 Technical (Basic Electrical Engg : Quiz 1 )
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Question 1
What will be the value of line current in three phase motor which operates at 500V and develops torque of 10kW at efficiency of 0.55 p.u with 0.80 power factor?
Question 2
For a step-up transformer, which among the following options are correct?
Question 3
In circuit shown, if capacitors C1, C2 and C3 are connected in parallel with potential difference V then find the correct expression for total capacitance C in the circuit.
Question 4
Find the phasor form for the signal v = 300sin (377t-450),
Question 5
Find the coil current in cast iron core when the flux density is Ф= 0.1x 10-3Wb?
given : Number of turns N = 500
Cross Sectional Area of the core A = 0.2 x 10-3 m2
length of iron core 1234 = 0.25 m
H=1550 At/m
given : Number of turns N = 500
Cross Sectional Area of the core A = 0.2 x 10-3 m2
length of iron core 1234 = 0.25 m
H=1550 At/m
Question 6
What will be the correct arrangements shown in option to get the total resistances of 24 Ω?
Question 7
Which among the following conditions are correct in case of Ideal transformer?
Question 8
Calculate the inductance in the Inductive circuit when Vmax = 150 V and Imax 50 A at frequency of 60 Hz.
Question 9
A low resistance LDR of 20Ω operated at a certain intensity of light, is to be protected through a series resistance in such a way that up to 12 mA of current is to flow at a supply voltage of 10 V. What is the nearest value of the protective resistance?
Question 10
A 500 HP, 440 V, 3-phase, 50 Hz induction motor runs at 950 r.p.m. when on full load with a synchronous speed of 1000 r.p.m. for this condition, the frequency of the rotor current will be
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Feb 4ESE & GATE EC
