DGVCL Exam Paper (11-12-2011) Reactance relay is used to protect against Earth faults only Phase faults only Both phase and earth faults Over voltage faults Earth faults only Phase faults only Both phase and earth faults Over voltage faults ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The effect of electric shock on the human body depends on All of these Duration of contact Current Voltage All of these Duration of contact Current Voltage ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) First zone distance relay protects the transmission line section upto 50 % of its full length 25 % of its full length 80 % of its full length Its full length 50 % of its full length 25 % of its full length 80 % of its full length Its full length ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) At time t= 0+ , with zero initial condition, which of the following acts as a short circuit? Resistor Conductor Capacitor Voltage source Resistor Conductor Capacitor Voltage source ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Which motor is used to start heavy loads? Series motor Differentially compounded motor Shunt motor Cumulatively compounded motor Series motor Differentially compounded motor Shunt motor Cumulatively compounded motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Torque in d.c motor = k* φ * IaIn series motor φ α IaTα I²starting torque of dc series motor is high
DGVCL Exam Paper (11-12-2011) In a power plant, a reserve generating capacity which is not in service but is in operation is known as Firm power Spinning reserve Hot reserve Cold reserve Firm power Spinning reserve Hot reserve Cold reserve ANSWER DOWNLOAD EXAMIANS APP
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