Industrial Fan and Blower Systems Overview

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Questions and Answers

What is the nominal voltage of the air ventilation and main blower units?

220 V
98-135 V AC
50 Hz
415 V ±10% (correct)

Which material is used for the fan blade in the coach fan?

Plastic
Steel
Nylon (correct)
Aluminium

What is the power consumption at rated capacity for the air ventilation and blower units?

1.75 kW
22.0 Nm
1.6 kW (correct)
24.4A

What is the power factor of the coach fan?

0.9 (A) Signup and view all the answers

What is the sweep size of the coach fan?

450 mm (C) Signup and view all the answers

At what speed does the air ventilation and blower unit operate at rated power?

2840 rpm (C) Signup and view all the answers

What is the efficiency of the blower unit at rated capacity?

49 % (D) Signup and view all the answers

What is the air delivery rate of the coach fan?

85 m3/min (C) Signup and view all the answers

What is the starting current of the air ventilation motor?

24.4 A (C) Signup and view all the answers

What is the power output at the shaft for the air ventilation and blower unit at the working point?

1.25 kW (B) Signup and view all the answers

What power factor is indicated for the air ventilation system?

0.82 (B) Signup and view all the answers

Which aspect of the air ventilation and blower unit has the lowest efficiency rating?

Blower efficiency (C) Signup and view all the answers

Which material is specified for the wire mesh and body of the coach fan?

Aluminium (B) Signup and view all the answers

What is the expected air delivery rate for the coach fan?

85 m3/min (D) Signup and view all the answers

Which of the following specs is related to the coach fan's operational speed?

1200 rpm (C) Signup and view all the answers

Which is the nominal voltage specification for the coach fan?

98-135 V (A) Signup and view all the answers

What is the torque produced at the starting current for the air ventilation motor?

22.0 Nm (C) Signup and view all the answers

What is the total power consumption of the air ventilation unit at its rated capacity?

1.6 kW (B) Signup and view all the answers

What is the RPM at which the air ventilation and blower units operate at their rated power?

2840 rpm (B) Signup and view all the answers

Which company manufactured the air ventilation and blower units?

Siemens (C) Signup and view all the answers

What is the make of the coach fan mentioned in the specifications?

M/s Raman Sinha (Shankar) (C) Signup and view all the answers

Which of the following specifications is associated with the motor of the air ventilation and main blower units?

2840 rpm operational speed (B) Signup and view all the answers

What is the nominal voltage specification for the air ventilation system?

415 V ±10% (D) Signup and view all the answers

Which type of motor is used in the air ventilation and main blower units?

Induction motor (B) Signup and view all the answers

What is the power factor of the air ventilation motor at rated power?

0.82 (D) Signup and view all the answers

What material is specified for the body of the coach fan?

Aluminium (B) Signup and view all the answers

What is the power consumption at the rated capacity of the air ventilation unit?

1.6 kW (D) Signup and view all the answers

What is the efficiency rating of the motor at rated capacity?

77.5% (B) Signup and view all the answers

Which option represents the RPM of the coach fan?

1200 RPM (D) Signup and view all the answers

Flashcards

Coach Fan

A type of fan used in train coaches. It is designed to circulate air and keep the passenger compartment cool and comfortable.

Coach Fan Manufacturer

The manufacturer of the coach fan used in AC-DC EMUs.

Coach Fan Voltage

The electrical operating range of the coach fan. It indicates that the fan can work with AC voltage ranging from 98 to 135 volts at a frequency of 50 Hertz.