Network Theory And Analysis - Study Mode

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[#191] The reactance of a 1 Henry inductor at 50 Hz will be

(A) 314 ohms

(B) 0 ohms

(C) ∞ ohms

(D) 394 ohms

Correct Answer

(A) 314 ohms

[#192] Calculate the value of R L so that the power transfer in the given circuit will be maximum.

(A) 6 Ω

(B) 4 Ω

(C) 8 Ω

(D) 2 Ω

Correct Answer

(A) 6 Ω

[#193] Find R e in k Ω (Assume R = 1 Ω)

(A) 2.5

(B) 2.64

(C) 2.79

(D) 2.97

Correct Answer

(B) 2.64

[#194] For the circuit shown in the given figure, when the switch is at position A, the current i(t) = Isin(ωt + 30°) A. When switch is moved to position B at time t = 0, the power dissipated at the switching instant in the resistor R remains unchanged The value of I and the element X would respectively, be

(A) 1 A and resistor

(B) 2 A and capacitor

(C) 3 A and resistor

(D) 4 A and capacitor

Correct Answer

(D) 4 A and capacitor

[#195] Unit of density is

(A) kg/m 3

(B) g/m 3

(C) kg/m 2

(D) kg/m

Correct Answer

(A) kg/m 3