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All Journal Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Jurnal Pendidikan Teknik Mesin
Wirawan Adipradana
Universitas Sriwijaya
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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PENGARUH PENERAPAN SISTEM PEMBELAJARAN DARING DAN KEMANDIRIAN BELAJAR MAHASISWA FKIP UNIVERSITAS SRIWIJAYA Edi Setiyo; Harlin Harlin; Rudi Hermawan; Wirawan Adipradana
Jurnal Pendidikan Teknik Mesin Vol. 11 No. 2 (2024): JURNAL PENDIDIKAN TEKNIK MESIN
Publisher : Program Studi Pendidikan Teknik Mesin Fakultas Keguruan dan Ilmu Pendidikan Universitas Sriwiajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jptm.v11i2.35

Abstract

Pertumbuhan IPTEK yang sangat pesat, membuat proses belajar mengalami pertumbuhan. Dunia pendidikan saat ini mengalami perubahan, karena wabah Covid-19. Hal ini memberikan perubahan peraturan serta kebijakan yang diterapkan. Proses pembelajaran mulanya secara langsung menjadi pembelajaran secara online. Pemerintah menerbitkan surat edaran untuk stay at home physical and social distancing. Dalam mewujudkan pembelajaran peserta didik secara aktif pada masa pandemik covid-19 butuh kemandirian belajar yang tinggi supaya proses pembelajaran daring terlaksana secara baik. Pada saat covid-19, kemandirian belajar merupakan salah satu hal penting yang harus dimiliki oleh peserta didik supaya kompetensi belajar yang diinginkan bisa tercapai secara maksimal. Metode penelitian adalah penelitian asosiatif dengan analisis kuantitatif. Adapun hasilnya adalah terdapat hubungan positif dan signifikan antara penerapan sistem pembelajaran daring dengan kemandirian belajar mahasiswa di FKIP Universitas Sriwijaya, besar koefisien korelasi (r) yakni 0,433 dan koefisien determinasi (r2) adalah 0,658. Berdasarkan R Square dilihat besarnya pengaruh kedua variabel sebesar 65,8 %. Kata kunci: Pembelajaran, Daring, Kemandirian, Belajar.
Thermal Safety and Efficiency of a 24 Volt DC Motor Used as a Prime Mover for a Single-Phase Generator Sri Agustina; M. Aldi Ramadhan; Herlina; Wirawan Adipradana
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.9537

Abstract

Brushed DC motors are often used as low-cost prime movers in small generator sets. However, users rarely evaluate thermal safety together with efficiency when the set operates under repeated electrical loads. This study investigates a 24 V, 750 W brushed DC motor mechanically coupled to a 220 V, 50 Hz single-phase synchronous generator and a lamp-based resistive load bank. Three generator load levels were tested (1000 W, 1400 W, and 2600 W). Each test ran for 10 minutes to represent a short-time duty that is practical for repeated laboratory trials and long enough to reveal a clear temperature trend while maintaining safe operation. The DC terminal voltage (V), input current (A), and motor surface temperature (°C) were recorded every 2 minutes. Input power, temperature rise, estimated loss power, output power, and apparent efficiency were then computed at the 10-minute mark. The results show a monotonic temperature rise with load: after 10 minutes, the motor surface temperature reached about 36.0°C (1000 W), 39.3°C (1400 W), and 41.5°C (2600 W), corresponding to a 9–15 K rise above ambient. The apparent efficiency remained high at 94.3–96.3%. These findings support a simple and replicable approach to discussing the thermal safety and efficiency of small motor–generator sets in laboratory practice.
Co-Authors Edi Setiyo Harlin Harlin Herlina M. Aldi Ramadhan Rudi Hermawan Sri Agustina