List of top Electrical Power And Energy Engineering Questions on Project Management

Arrange the following :
• [A.] SCR anode is made positive with respect to cathode
• [B.] Junction \(J_1\) and \(J_3\) become forward biased
• [C.] Gate current injects minority carriers
• [D.] Regenerative feedback builds conduction
• [E.] Latching current sustains device ON state Choose the correct answer from the options given below :

Arrange the following statements :
• [A.] Abnormal impedance appears on transmission line
• [B.] Relay comparator detects deviation from set value
• [C.] Relay output contacts close
• [D.] Trip coil of circuit breaker is energised
• [E.] Breaker contacts interrupt fault current Choose the correct answer from the options given below :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Thyristors can be turned off by gate control. Reason (R) : Thyristors require current to fall below holding current to turn off. In the light of the above statements, choose the most appropriate answer from the options given below :

Arrange the following statements :
• [A.] Pulverized fuel is injected into the furnace
• [B.] Chemical Energy converted into thermal Energy
• [C.] High temperature gases transfer heat to boiler tubes
• [D.] Water undergoes phase change into superheated steam
• [E.] Steam energy is delivered to turbine blades Choose the correct answer from the options given below :

In a thermal power plant coal is used for the generation of electricity. How energy changes from one form to another before it is transformed into Electrical energy ?

In load flow studies, PV bus is treated as a PQ bus, when :

The per unit impedance of a circuit is 0.25. If the base kV and base MVA are halved, then the new value of p.u. impedance of the circuit will be :

A thyristor controlled reactor is used to get :

The Insulation Resistance of a 3 km long cable is \(200 \, \text{M}\Omega\). For length of \(15 \, \text{km}\), the Insulation Resistance will be :

Power factor can be improved by installing a device in parallel with load which has :

The maximum short circuit current occurs in case of :

In load flow studies of a power system, a voltage control bus is specified by :

For frequency Response Analysis of an operational Amplifier : A. Identify dominant poles
B. Draw Bode magnitude plot
C. Apply gain-bandwidth product concept
D. Determine closed loop gain
E. Assess stability margin Choose the correct answer from the options given below :

Operation of an Op-Amp with Negative feedback : A. Error voltage becomes very small
B. Output stabilizes
C. Input signal applied
D. Feedback signal is generated Choose the correct answer from the options given below :

Direct laying method of laying underground cables has the drawback of : A. High maintenance cost
B. Localisation of fault is difficult
C. Possibility of damage of cable sheath owing to undergoing chemical changes due to impurities present in soil
D. Risk of cable being damaged
E. Low maintenance cost Choose the correct answer from the options given below :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : An ADC converts digital signal into Analog signals. Reason (R) : DAC performs the inverse operation of ADC. In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : A Zener diode is used for voltage regulation. Reason (R) : It maintains a nearly constant voltage in reverse breakdown region. In the light of the above statements, choose the most appropriate answer from the options given below :

AC voltage regulators are widely used in :

In a Zener diode :