111. Calculate the value of the coefficient of coupling for the isolated coils.

A. 0

B. 1

C. 5

D. 7

112. Calculate the value of equivalent inductance for series aiding of two coils whose self inductances are 5 H, 2 H, and mutual inductance value

is 4 H.

A. 15 H

B. 12 H

C. 13 H

D. 11 H

113. Calculate the value of equivalent inductance for series subtracting polarity of two coils whose self inductances are 14 H, 5 H, and mutual inductance value is 1 H. [/bg_collapse]

A. 15 H

B. 17 H

C. 12 H

D. 10 H

114. Calculate the value of the capacitive reactance during resonance if the value of the inductor is 5 H and the supply frequency is 20 rad/sec.

A. 100 Ω

B. 200 Ω

C. 300 Ω

D. 700 Ω

115. Calculate the quality factor for the R-L circuit if R=28 Ω and L=2 H.

A. 14

B. 16

C. 10

D. 17

116. The quality factor is calculated for ___________

A. Power factor loads

B. Inductive coils

C. Lagging loads

D. Leading loads

117. Calculate the equivalent resistance when two resistances are connected in parallel of values 8 Ω, and 8 Ω.

A. 3 Ω

B. 2 Ω

C. 4 Ω

D. 7 Ω

118. Calculate the quality factor for the R-C circuit if R=2 Ω and C=1 F.

A. 0.2

B. 0.4

C. 0.6

D. 0.5

120. The value of unit step function at t=5 sec is ________

A. 0

B. 1

C. -1

D. 2

122. The value of impulse at t=0 is __________

A. 0

B. 2

C. 1

D. infinite

123. Full form of IFOC.

A. Indirect field-oriented control

B. Inverter field-oriented control

C. Isolated field-oriented control

D. Insight field-oriented control

124. The characteristic shown by an element in the I-V curve is a straight line passing through the origin with a positive slope. The nature of the element is _______

A. Non-linear, Bilateral

B. Linear, Unilateral

C. Linear, Bilateral

D. Non-linear, Unilateral

125. Calculate the total energy stored in the inductor if the current value is 4 A and inductance values are 1 H and 2 H.

A. 72 J

B. 22 J

C. 82 J

D. 24 J

126. Mesh analysis is only applied to the planar circuits.

A. True

B. False

127. All loops are meshes.

A. True

B. False

128. The nodal method is better than mesh analysis for solving circuit problems.

A. True

B. False

129. The minimum value of the admittance in the case of the parallel RLC network is ___________

A. R

B. 1÷R

C. Xl-Xc

D. Xc

130. Calculate the value of the inductive reactance during resonance if the value of capacitive reactance is 2 ohm.

A. 8 Ω

B. 2 Ω

C. 3 Ω

D. 1 Ω

131. Calculate the quality factor for the resistor.

A. inf

B. 0

C. 1

D. .7

132. Selectivity value increases for lower values of bandwidths.

A. True

B. False

133. Calculate the equivalent resistance when two resistances are connected in parallel of values 2 Ω, and 2 Ω.

A. 1 Ω

B. 2 Ω

C. 4 Ω

D. 7 Ω

134. Calculate the equivalent capacitance when two capacitors are connected in parallel of values 8 F, 7 F.

A. 15 F

B. 20 F

C. 40 F

D. 7 F

135. Plugging is suitable for __________ type loads.

A. Gravitational

B. Electrostatic

C. Weightless

D. Leading

136. In DC shunt machine ∅ is directly proportional to Ia.

A. True

B. False

137. Braking resistance should be selected in order to limit the braking current.

A. True

B. False

138. Torque developed in the motor is ___________

A. KmΦIa

B. KmΦIa3

C. 2KmΦIa

D. KmΦIa2

139. Full form of TVR is _________

A. Terminal voltage reversal

B. Total voltage reversal

C. Terminal voltage redirect

D. Total voltage reversal

130. Calculate the current in DC shunt field winding using the following data: Ia=15 A, IL=21, R=22, N=484.

A. 4 A

B. 2 A

C. 7 A

D. 6 A