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ESE-2018 Electrical Engineering Quiz 21
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Question 1
A capacitor consists of two metal plates each 500 × 500 mm2 and spaced 6mm apart. The space between the metal plates is filled with a glass plate of 4mm thickness and a layer of paper of 2mm thickness. The relative permittivities of the glass and paper are 8 and 2 respectively. Neglecting the fringing effect, the capacitance will be (Given that ε0 = 8.85 × 10–12 F/m)
Question 2
Two identical coils each having inductance L are placed together on the same core. If an overall inductance of αL is obtained by interconnecting these coils, the minimum value of α is ____________.
Question 3
The energy in poynting theorem is explained as:
Question 4
Two semi-infinite conducting sheets are placed at right angles to each other as shown in the figure. A point charge of +Q is placed at a distance of d from both sheets. The net force on the charge is 
, where K is given by
, where K is given by Question 5
A toroid having inner radius a and outer radius b with current I carries N turns with r as radius. Which among the following condition describes magnetic field to be zero everywhere inside the inner radius?
Question 6
Two infinite strips of width w m in x direction as shown in Fig., are carrying forward and return currents of +I and –I in the z direction. The strips are separated by a distance of xm. The inductance per unit length of the configuration is measured to be L H/m. If the distance of separation between the strips is now reduced to 
the inductance per unit length of the configuration is
the inductance per unit length of the configuration is Question 7
Two magnetically uncoupled inductive coils have Q factors q1 and q2 at the chosen operating frequency. Their respective resistances are R1 and R2. When connected in series, their effective Q factor at the same operating frequency is
Question 8
Consider the following statements:
(i) The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil
(ii) The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit.
(i) The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil
(ii) The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit.
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Mar 14ESE & GATE EE
