Description : How dearator pressure is maintained after turbine trip?
Last Answer : Pegging steam is used to maintain dearator pressure after turbine trip.
Description : How dearator pressure is maintained?
Last Answer : Dearator pressure is normally maintained by extraction steam.
Description : Diesel generators #1 and #2 are operating in parallel at near full load capacity. Diesel generator #1 suddenly trips out mechanically due to low lube oil pressure. The reverse power relay functions ... all nonvital circuits. D. Secure alarms, reset reverse power relay, and restart #1 engine.
Last Answer : Answer: C
Description : In a logic circuit the NOR and NAND gate functions ____________. A. must be accomplished with a common base transistor arrangement B. are available in diode form C. are exact opposites with the ... . have output conditions that are exact opposites to the output condition for OR and AND, respectively
Last Answer : Answer: D
Description : The circuit shown in the illustration functions as a ____________. EL-0087 A. pulse trigger circuit for an operational amplifier B. three stage, high gain class 'A' amplifier C. binary ripple counter or shift register D. free running multivibrator
Description : A triac thyristor functions as a control device and is basically ________________. A. two NPN transistors in parallel with a common base lead B. a diode in series with a temperature sensitive capacitor C. two ... -back SCR's with a common gate lead D. a triode tube with an extra heavy grid element
Description : A shading coil used in an AC magnetic controller, functions to _____________. A. reduce vibration and noise in the contactor B. prevent flux buildup in the operating coil C. eliminate arcing when the contacts close D. energize the operating coil and 'pull in' the contacts
Last Answer : Answer: A
Description : What operational characteristics do the components labeled as 'S' and 'R' represent in the motor controller diagram shown in the illustration? EL-0080 A. Standard and Reverse directions B. Stop and Restart features C. Subnormal and Regular loading D. Start and Run functions
Description : The full torque electric brake on an electric cargo winch functions to _____________. A. act as a backup brake in the event the mechanical brake should fail B. automatically hold the load ... automatically govern the lowering speed of the load D. automatically govern the hoisting speed of the load
Last Answer : Answer: B
Description : What are the functions of no-load current in a transformer ?
Last Answer : No-load current produces flux and supplies iron loss and copper loss on no-load.
Description : What are the functions of protective relays
Last Answer : To detect the fault and initiate the operation of the circuit breaker to isolate the defective element from the rest of the system, thereby protecting the system from damages consequent to the fault.
Description : What are the functions of charger?
Last Answer : 1. For initial charging. 2. For float charging. 3. For battery equalizing charging. 4. For battery boost charging. 5. To supply normal DC loads.
Description : What are the sources of 240 V AC class I supply? What are the functions of each part of UPS?
Last Answer : Six sources. Three 20 kVA UPS for safety related loads. Two 60 kVA UPS for non-safety related loads. One 60 kVA UPS as a standby to safety related loads. These all UPS are back up by ... UPS into service. Manual bypass To take main UPS to maintenance by putting stand by UPS into service.
Description : What are the functions of arc chute?
Last Answer : To increase the speed of rise of arc by magnetic action. It splits the arc by this arc resistance increases. Diagnosing the arc by cooling.
Description : How fibrillation current functions?
Last Answer : Fibrillation current is actually function of individual body weight. For 50 kgs body weight: fibrillation current (IB) = 0.116/ª ts (Limited to 0.03 - 3 sec. Range) Where ts = duration ... is kept more because to care for under grounding services. Example laying of power cables, drainage etc.
Description : Name the functions of the valve?
Last Answer : a. ON and OFF service. b. Throttling or regulating liquid flow. c. Avoid back flow. d. Regulating pressure. e. Relieving pressure.
Description : What are the functions of a heat exchanger?
Last Answer : The function of heat exchanger is to transfer heat efficiently and economically between two fluids. Heat is transferred from the fluid, which has higher temperature to the fluid, which has lower temperature. The ... flow in heat exchangers a. Parallel flow. b. Counter flow. c. Transverse flow.